JP7436287B2 - Turning evaluation support device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a device that supports evaluation of swirl strength in piping system design.

When designing the installation position of a flowmeter in a piping system such as a nuclear power plant, if the flowmeter cannot be installed in a position that satisfies safety standards, a simulation called three-dimensional fluid analysis is performed as an alternative to actual flow tests. We will consider developing a system that uses the simulation results to evaluate the influence of the flow field within the piping system on the accuracy of the flowmeter.

One of the influences on flowmeter accuracy is the strength of swirl in the flow (hereinafter referred to as swirl strength). If the swirling strength of the fluid in the piping system is high, the accuracy of the flowmeter will decrease. Therefore, by calculating the swirling strength on a cross section at a specific tube axis coordinate, it is possible to understand where the swirling strength is high and how many tube axis coordinates are required to attenuate the swirling strength. This will be reflected in the adjustment of piping routing and flow meter position to prevent the swirling strength from becoming too high.

However, three-dimensional fluid analysis requires an enormous amount of calculation time, so it is necessary to shorten the time. Therefore, with reference to Patent Document 1, a method is considered in which a simple fluid analysis is performed on a number of piping systems, and a three-dimensional fluid analysis is performed only on piping systems that require attention because of a high estimated value of the swirling strength of the piping system. Simple fluid analysis specifically involves creating a parameter table in advance based on past cases in which the characteristics of parts, analysis conditions, and swirling strength on the inlet side of a piping system are input, and the swirling strength on the outlet side is output. I'll keep it. By creating a database of the parameter tables, when the characteristics of the parts, analysis conditions, and swirling strength on the inlet side are input, an estimated value of the swirling strength on the exit side is output. Once the swirl strength on the inlet side of the most upstream part is set, the swirl strength on the outlet side of the most downstream part can be estimated by calculating from upstream to downstream. Three-dimensional fluid analysis is executed only when this estimated value is equal to or greater than a threshold value.

Japanese Patent Application Publication No. 2011-2360

In this simple fluid analysis, there is a problem in that accuracy cannot be achieved even if a parameter table is created for each part when estimating the swirling strength. On the other hand, accuracy will be improved if multiple parts are grouped together and a parameter table is created for each group. For example, when the swirl strength is expressed as the swirl number, the swirl strength may be higher in a flow path formed by a plurality of adjacent parts when the flow paths do not fit on one plane than when they fit on one plane. In particular, since a valve has an internal flow path that does not fit in one plane, the swirl strength often changes. In order to improve the accuracy of the turning strength in this way, it is necessary to organize the parts of the piping system into groups.

Furthermore, when such a simple fluid analysis is performed, there is a problem in that simply producing an estimated result has no basis and is therefore less persuasive. Users are concerned that three-dimensional fluid analysis must actually be performed for all piping locations.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a turning evaluation that enables accurate discrimination between piping locations that require three-dimensional fluid analysis and piping locations that do not, in the design of piping systems. The goal is to provide support equipment.

In order to achieve the above object, the present invention provides a turning evaluation support device for estimating the turning strength of a piping system, in which a plurality of parts constituting the piping system are divided into one or a group consisting of two or more consecutive parts. and at least one position downstream of the most upstream position and upstream of the most downstream position of the group, based on the turning strength at the most upstream position of the group, the specifications of the parts constituting the group, and analysis conditions. The vehicle is provided with an arithmetic device that calculates the turning strength, and a display device that displays the turning strength for each group.

According to the present invention configured as described above, a plurality of parts constituting a piping system are divided into groups each consisting of one or two or more consecutive parts, and the turning strength is estimated for each group. The estimation accuracy can be improved. Furthermore, since it is possible to visually confirm how the piping systems are grouped, it is possible to accurately distinguish between piping locations that require three-dimensional fluid analysis and piping locations that do not.

According to the swing evaluation support device according to the present invention, in designing a piping system, it is possible to accurately determine piping locations that require three-dimensional fluid analysis and piping locations that do not.

1 is a diagram showing a hardware configuration of a turning evaluation support device in an embodiment of the present invention. FIG. 2 is a functional block diagram of a turning evaluation support device in an embodiment of the present invention. FIG. 3 is a functional block diagram of a turning strength increasing component group extraction unit in an embodiment of the present invention. FIG. 3 is a functional block diagram of a 3D shape output unit in an embodiment of the present invention. It is a processing flow of a turning evaluation support device in an embodiment of the present invention. This is the first half of the processing flow of component connection list creation processing in the embodiment of the present invention. This is the second half of the processing flow of the turning strength simple estimation process in the embodiment of the present invention. It is a processing flow of 3D fluid analysis execution processing in an embodiment of the present invention. It is a processing flow of parts group division processing in an embodiment of the present invention. It is a process flow of a component group extraction process with the highest turning strength in an embodiment of the present invention. 3 is a processing flow of part color designation processing, graph output processing, and 3D shape output processing in the embodiment of the present invention. FIG. 3 is a diagram showing a data structure of various data in an embodiment of the present invention. FIG. 2 is a diagram showing the data structure of 3D-CAD data and a piping parts list in an embodiment of the present invention. It is a diagram showing a data structure of piping component information in an embodiment of the present invention. FIG. 3 is a diagram showing a data structure of an analysis condition list in an embodiment of the present invention. FIG. 3 is a diagram showing a data structure of a component connection list in an embodiment of the present invention. FIG. 3 is a diagram showing a data structure of simulation results in an embodiment of the present invention. FIG. 3 is a diagram showing a data structure of a turning strength calculation result or a turning strength estimation result in an embodiment of the present invention. FIG. 3 is a diagram showing a data structure of a parts group list in an embodiment of the present invention. FIG. 3 is a diagram showing a data structure of a predictive model for a component group in an embodiment of the present invention. It is a table showing an example of component group determination in the embodiment of the present invention. It is an example of a screen display on the display in embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the hardware configuration of a turning evaluation support device in this embodiment. This turning evaluation support device includes a turning evaluation support section A1, a display output section A2, and an operation input section A3.

The turning evaluation support section A1 is a calculation device that outputs a graph of a fluid analysis result or a simple fluid analysis result, 3D data of a piping system, etc. to a display output section A2 according to a user operation input from an operation input section A3. The turning evaluation support section A1 includes a CPU (Central Processor Unit), a RAM (Random Access Memory), a storage device A10, and an I/F (Interface). The CPU executes arithmetic processing according to a program for supporting turning evaluation. The RAM temporarily stores data in a program for visualizing simulation results. The storage device A10 records programs, data, etc. for visualizing simulation results, and corresponds to a hard disk drive, a flash memory drive, and the like.

The storage device A10 stores a 3D fluid analysis program, a piping component relationship recognition program, a simple rotation strength estimation program, and a visualization program as programs for supporting rotation evaluation. Furthermore, various data D1 used when executing these programs are also stored.

The 3D fluid analysis program specifies the piping parts list, analysis conditions, and 3D-CAD data described below according to the operation input from the user, executes simulation calculations, calculates the turning strength along the pipe axis coordinates from the simulation results, and calculates the The results are stored in the storage device A10. When the piping parts relationship recognition program inputs a piping parts list that enumerates the specifications of the parts that make up the piping system, it extracts nodes that serve as connection points and links representing the parts themselves from the piping parts, and connects links that have the same nodes. By doing so, connections between piping parts are established. The simple swirl strength estimation program estimates the swirl strength downstream from the swirl strength of the most upstream stream using a prediction model, using the connection relationship of piping parts, a list of piping parts, and analysis conditions as input. The visualization program creates an image including a graph of tube axis coordinates and physical statistics and a 3D data shape of the piping system from the simulation results according to the operation input from the user, and outputs it to the display output section A2.

The I/F receives data related to the user's operation input from the operation input unit A3, and transmits an image including the tube axis coordinates, a graph of physical statistics, and the 3D data shape of the piping system to the display output unit A2.

The display output unit A2 is a display device for outputting to the user an image including a graph of tube axis coordinates and swirl strength and a 3D data shape of the piping system, and refers to a display or a printer. The operation input unit A3 converts the operation input from the user into an electrical signal and sends it to the turning evaluation support device, and corresponds to a keyboard, a touch panel, a mouse, and the like.

FIG. 2 is a functional block diagram of the turning evaluation support device in this embodiment. The swing evaluation support device is composed of a 3D-CAD data/piping parts list/analysis condition storage section B1, a pipe parts relationship recognition section B2, a 3D fluid analysis section B3, a swing strength simple estimation section B4, and a visualization section B5.

The 3D-CAD data/piping parts list/analysis condition storage unit B1 stores 3D-CAD data that three-dimensionally describes the shape of the piping system, the piping parts list, and analysis conditions in the storage device A10. It transmits necessary data in response to calls from other parts.

When the piping parts relationship recognition unit B2 inputs a piping parts list listing the specifications of the parts constituting the piping system according to the contents of the piping parts relationship recognition program, the piping parts become connection points. This method extracts links representing nodes and components themselves, and connects links that have the same nodes to construct connection relationships between piping components. The piping component relationship recognition section B2 consists of a node/link extraction section B20 and a node/link connection section B21. The node/link extraction unit B20 extracts a node serving as a connection point and a link representing the component itself from the piping component on the piping component list. The node/link connection section B21 establishes a connection relationship between piping components by connecting links having the same node.

The processing flow of the piping component relationship recognition unit B2 in this embodiment will be explained using FIG. 6. First, the node/link extraction unit B20 registers components in the piping system as links. Next, the starting point of the part, that is, the center point of the most upstream part of the part, and the end point of the part, that is, the center point of the most downstream part of the part, are each registered as a node. Finally, the node/link information is sent to the node/link connection section. The node/link connection unit B21 uses the received node/link information to aggregate nodes whose positions overlap to such an extent that the difference can be ignored, and assigns them the same ID. Next, the node ID in the link information is updated to the ID assigned earlier. Finally, connect nodes and links, determine the most upstream and downstream positions, and determine the direction.

The 3D fluid analysis unit B3 specifies the piping parts list, analysis conditions, and 3D-CAD data described below according to the operation input from the user according to the contents of the 3D fluid analysis program, executes simulation calculations, and converts the pipe axis coordinates from the simulation results. The turning strength along the curve is calculated and the result is stored in the storage device A10. The 3D fluid analysis section B3 includes a 3D simulation section B30 and a swirl strength calculation section B31. The 3D simulation unit B30 specifies a piping parts list, analysis conditions, and 3D-CAD data, which will be described later, in accordance with operation input from the user, and executes simulation calculations. The turning strength calculation unit calculates the turning strength along the tube axis coordinates from the simulation results, and stores the result in the storage device A10.

The processing flow of the 3D fluid analysis unit B3 in this embodiment will be explained using FIG. 7. The 3D simulation unit B30 reads the 3D-CAD data received from the 3D-CAD data/piping parts list/analysis condition storage unit B1, sets analysis conditions, and executes the simulation. The simulation results obtained in the simulation are transmitted to the turning strength calculation unit B31. The turning strength calculation unit B31 creates a cross section for each component from the component connection list. Next, calculate the tube axis coordinates for each cross section. Finally, the turning strength is calculated from the simulation results and cross-sectional information for each part.

The swing strength simple estimation unit B4 inputs the connection relationship of piping parts, the piping parts list, and the analysis conditions according to the contents of the swing strength simple estimation program, and uses a prediction model to estimate the swirl strength from the most upstream swirl strength to the downstream swirl strength. It is estimated. The turning strength simple estimation section B4 includes a component group division section B40, a predictive model storage section B41, a predictive model application section B42, and a detailed analysis execution determination section B43.

The component group division section B40 divides one or more components constituting a piping system into groups. The parts group division part B40 is composed of a solid/plane/curve/single item category setting part B400, a turning strength increasing part group extraction part B401, an upstream/downstream separation part B402, and a parts group list creation part B403.

The solid/plane/curve/single item category setting section B400 updates and saves the current category when processing in the order of categories of component groups. The component group category includes parts such as valves where the flow path within one part does not fit on one plane, and parts other than the above where a straight pipe is sandwiched between two other parts and the flow path is on one plane. Among the parts other than those mentioned above, the flow path of a straight pipe sandwiched between two other parts fits in one plane, and among the parts other than the above, there are other parts that are adjacent to the straight pipe. There are two types of pipes: one is composed of two parts, and the other is a single part or a group of parts composed only of a series of straight pipes.

The swinging strength increasing component group extraction unit B401 extracts, from among the component groups belonging to the category, those whose swinging strength is estimated to increase the most based on the specifications of the parts. The upstream/downstream separation unit B402 separates the piping system upstream from the most upstream part of the part group and the most downstream part of the part group, with the most upstream and most downstream parts of the parts group extracted by the swirling strength increasing parts group extracting part B401 as the boundary line. Part group division processing is executed recursively for each piping system on the downstream side. The parts group list creation unit B403 records the number of the parts group extracted by the swinging strength increasing parts group extraction unit B401 in the parts belonging to the parts group on the parts connection list.

The predictive model storage part B41 is a parameter table that has been created in advance based on past cases, in which the specification of the component group, analysis conditions, and swirling strength on the inlet side are input in the piping system, and the swirling strength on the outlet side is output. This is a database. The prediction model application unit B42 outputs an estimated value of the downstream rotation strength when the specifications of the component group, the analysis conditions, and the most upstream rotation strength are input using the prediction model storage unit B41. The detailed analysis execution determination unit B43 determines whether the estimated value of the most downstream swirling strength calculated by the prediction model application unit B42 is greater than or equal to a threshold value, and if it is greater than or equal to the threshold value, the 3D fluid analysis unit B3 executes 3D fluid analysis. It is something that makes you

The processing flow of the turning strength simple estimation process F4 in this embodiment will be explained using FIG. 8. The component group dividing unit B40 groups together consecutively adjacent straight pipes in the component connection list. Next, initialize the category to 3D. Next, a component group division process F40 is executed using the component connection list to create a component group list, and the component group list is sent to the predictive model application unit B42. The predictive model application unit B42 sets the analysis conditions and the most upstream turning strength received from the 3D-CAD data/piping parts list/analysis condition storage unit B1. Next, a prediction model for each component group is requested from the prediction model storage unit B41. The predictive model storage unit B41 transmits the predictive model of the component group to the predictive model application unit B42, and the predictive model application unit B42 calculates the turning strength downstream from the most upstream side. The predictive model call and exit swirl strength calculation process for this component group are executed for each component group from the most upstream toward the downstream. When the prediction model application unit B42 calculates the most downstream swirl strength, it transmits the most downstream swirl strength to the detailed analysis execution determination unit B43. The detailed analysis execution determination unit B43 executes a turning strength threshold determination process for determining whether the most downstream turning strength is equal to or greater than a threshold value.

The processing flow of the component group division processing F40 in this embodiment will be described using FIG. 9. The turning strength increasing component group extraction unit B401 receives the component category number and component connection list from the solid/plane/curve/single item category setting unit B400, and searches for a component group specified by the category. If there is no part group specified by the category, the part category number is sent to the solid/plane/curve/single item category setting unit B400, and the solid/plane/curve/single item category setting unit B400 increments the part category number by 1 and rotates. The component category number and component connection list are transmitted to the strength-increasing component group extraction unit B401. If there is at least one part group specified by the category, execute the part group extraction process F401 with the highest swing strength for that part group, and select A component group that is likely to be promoted to the next step is extracted, and the component number, component category number, and component connection list of the component group are transmitted to the component group list creation unit B403.

The component group list creation unit B403 assigns and writes a group number to the component connection list of the extracted component group. If all component group numbers have been assigned to the components in all piping systems, the component group division process F40 will end, and if the component group division process F40 is called as a recursive process, go to the calling process. return. On the other hand, if there is even one component in the piping system that has not been assigned a component group number, other components are divided into upstream and downstream parts using the component group as a boundary, and recursive component group division processing F40 are executed on the upstream and downstream sides respectively. If both are completed, the parts group division process F40 is ended, and if the parts group division process F40 is called as a recursive process, the process returns to the calling source process.

The visualization unit B5 creates an image including a graph of the swirling strength or the calculated value of the swirling strength with respect to the pipe axis coordinates and a 3D data shape of the piping system according to the content of the visualization program and the operation input from the user, and outputs it to the display output unit A2. This is what is output. The visualization section B5 includes a component color specification section B50, a graph output section B51, and a 3D shape output section B52.

The component color designation section B50 is for specifying the color, line thickness, transparency, etc. of the component in accordance with the component group number assigned to each component by the component group division section B40. The graph output section B51 outputs a graph of the swirling strength or the calculated swirling strength against the tube axis coordinates to the display output section A2 according to the component color specified by the component color specifying section B50. Further, the 3D shape output section B52 creates an image including the 3D data shape of the piping system according to the component color designated by the component color designation section B50, and outputs it to the display output section A2.

The processing flow of the turning evaluation support device in this embodiment will be explained using FIG. 5. The piping parts relationship recognition unit B2 requests a piping parts list from the 3D-CAD data/piping parts list/analysis condition storage unit B1, and the 3D-CAD data/piping parts list/analysis condition storage unit B1 stores the piping parts list. is transmitted to the piping component relationship recognition unit B2. The piping component relationship recognition unit B2 executes a component connection list creation process F2 using the component connection list, creates a component connection list, and sends it to the turning strength simple estimation unit B4.

The swing strength simple estimation section B4 requests the analysis conditions and simulation model from the 3D-CAD data/piping parts list/analysis condition storage section B1, and the 3D-CAD data/piping parts list/analysis condition storage section B1 performs the analysis. The conditions and simulation model are sent to the piping component relationship recognition unit B2. The swirl strength simple estimation unit B4 executes the swirl strength simple estimation process F4 using the analysis conditions, the simulation model, and the component connection list, and calculates the swirl strength from the most upstream side to the downstream side along the tube axis coordinates. If the estimated value of the most downstream swirl strength is equal to or greater than the threshold value, the swing strength simple estimation unit B4 outputs a detailed analysis execution command to the 3D fluid analysis unit B3, and if not, it outputs the swing strength and the component connection list to the visualization unit B5. and proceeds to component color designation processing F50.

When the 3D fluid analysis unit B3 receives a detailed analysis execution command from the swing strength simple estimation unit B4, the 3D fluid analysis unit B3 sends the 3D-CAD data, analysis conditions, and simulation model to the 3D-CAD data/piping parts list/analysis condition storage unit B1. The 3D-CAD data/piping parts list/analysis condition storage unit B1 sends the 3D-CAD data, analysis conditions, and simulation model to the 3D fluid analysis unit B3. The 3D fluid analysis unit B3 executes the 3D fluid analysis process F3 using the 3D-CAD data, analysis conditions, and simulation model, calculates the swirling strength from the most upstream side to the downstream side along the pipe axis coordinates, and calculates the swirling strength from the most upstream side to the downstream side along the pipe axis coordinates. The turning strength is transmitted to the visualization unit B5.

When the visualization unit B5 receives the pipe axis coordinates and swirl strength from the 3D fluid analysis unit B3 or the swirl strength simple estimation unit B4, it first executes a component color designation process F50 to set the drawing color of the components inside the pipe. Next, a graph output process F51 is executed to output a graph with the tube axis coordinates as the horizontal axis and the turning strength as the vertical axis to the display output section A2. Finally, 3D shape output processing F52 is executed to output the 3D shape of the entire piping system to the display output section A2, and the processing is completed.

FIG. 3 is a functional block diagram of the turning strength increasing component group extraction unit B401 in this embodiment. The swinging strength increasing parts group extracting unit B401 includes a category specified parts combination extracting unit, a swinging strength increasing degree calculation unit, and a swinging strength re-increasing parts group selection unit. The category specified component combination extraction section extracts the component group group of the category specified by the 3D/plane/curve/single item category setting section B400 into the component connection sent from the piping component relationship recognition section B2 or the upstream/downstream separation section B402. It is extracted from the list. If the component group of the category does not exist in the component connection list, a request is made to the solid/plane/curve/single item category setting unit B400 to update the category.

The turning strength increase degree calculation section calculates the degree of increase in turning strength for the component group group extracted by the category specified component combination extraction section using the specifications of the parts constituting the component group. For example, the degree of increase in turning strength d is calculated from the length L of the straight pipe and the bending angle θ of the elbow using equation (1).

Another method is to obtain the coordinates from the most upstream and downstream center points of each component forming the component group. The swinging strength re-increase component group selection unit selects the component group with the highest swinging strength increase degree calculated by the swinging strength increase degree calculation unit from among the component groups, and transmits it to the upstream/downstream separation unit B402.

The processing flow of the highest turning strength component group extraction process F401 in this embodiment will be described using FIG. 8. First, the turning strength increasing component group extraction unit B401 determines whether the category number is 4, that is, only a single item. If there is only a single part, it is checked whether a group number has been assigned to each part, and if there is a part to which a group number has not been assigned, that single part is treated as the group with the highest turning strength and the process is completed.

If the category number is 4 and it is not only a single item, the following process is executed for each straight pipe to which a group number has not been assigned. First, if the category number is 1, that is, in the case of a three-dimensional arrangement, straight pipes sandwiched between curved elements are grouped. If the flow path of a component group, that is, the center points of the most upstream and most downstream points of each component are in one plane, the process is executed for the next straight pipe. If the flow path of a component group is in one plane, the degree of increase in swirling strength is calculated from the specifications of the components in the component group using, for example, equation (1). If the degree of rise is the maximum value among all the straight pipes so far, the current group is set as the group with the highest turning strength, the maximum value of the degree of increase in turning strength is updated, and the process is executed for the next straight pipe. . If the process is executed for all straight pipes without component group numbers, the process ends.

FIG. 4 is a functional block diagram of the 3D shape output section B52 in this embodiment. The 3D shape output section B52 includes a piping system entire 3D shape creation section, a component extraction section, a component color setting section, and a graphic output section. The 3D shape creation unit for the entire piping system creates the 3D shape of the entire piping system from the mesh information and grid points in the 3D-CAD data, piping parts list, and analysis condition storage unit B1. It is. The component extraction unit extracts the specifications of the components in the component connection list sent from the piping component relationship recognition unit B2, specifically the coordinates of the most upstream and downstream center points, the radius of the component, and the curvature in the case of an elbow. The system extracts the corresponding parts from the 3D shape of the entire piping system, and outputs the 3D shape of each part and the 3D shape of the entire piping system. The component color setting section sets the drawing color of the component extracted by the component extraction section to the color specified by the component color specification section, and outputs the colored parts and the entire 3D shape of the piping system. . In addition to the color, specifications for hunting and contour lines may also be set. The graphic output section outputs colored parts and the entire 3D shape of the piping system to the display output section A2.

The processing flows of the component color designation process F50, graph output process F51, and 3D shape output process F52 in this embodiment will be described using FIG. 11. The component color designation unit B50 calculates the color of each component group. For example, if the categories are 3D arrangement, planar arrangement, curve, and single item only, the color calculation method is to assign red to 3D arrangement, green to planar arrangement, blue to curved line, and white to single item, and assign the highest degree of increase in rotational strength. Assign the maximum value of brightness to the object, then gradually decrease the brightness from the highest to the lowest. Specifically, in the case of a three-dimensionally arranged component group, the color is set using equation (2).

Here, i is the depth of the binary tree of the component group, imax is the maximum depth of the binary tree, and Ri, Gi, and Bi are the brightness of red, green, and blue of the component group, respectively. Rmax, Gmax, and Bmax indicate the maximum brightness values of red, green, and blue, and Rmin, Gmin, and Bmin indicate the minimum brightness values of red, green, and blue, respectively. However, when defining the brightness of a color from 0 to 255, it is desirable to substitute a value somewhat smaller than 255 (for example, 240) for Rmax and a value larger than 0 (for example, 60) for Rmin. For a component group with a planar arrangement, use formula (3), for a component group where a straight pipe and other parts are adjacent, use formula (4), and for a single component group, use formula ( 5), respectively, to set the color.

In addition to the color, drawing specifications such as the thickness of the outline and the type of hunting may be set for each component group. This process is executed for all component groups. After that, the color of each component group is set for each component in the component connection list. This process is executed for all parts, and a parts connection list containing group numbers and their color information, as well as colors and part numbers of all parts groups, are transmitted to the graph output section B51.

The graph output unit B51 acquires the tube axis coordinates at each point along the tube axis and the turning strength at that time for each component group. Next, draw a graph with the horizontal axis as the tube axis coordinate and the vertical axis as the rotation strength using the specified color. Basically, it is drawn using points, but depending on the user's request, it may be drawn using points and lines. This process is executed for all component groups, and a component connection list containing group numbers and their color information, as well as colors and component numbers of all component groups, are transmitted to the graph output section B51.

The 3D shape output unit B52 creates a 3D shape of the entire piping system from the mesh information and grid points in the 3D-CAD data, piping parts list, and analysis condition storage unit B1 sent from the 3D-CAD data, piping parts list, and analysis condition storage unit B1, and uses it for graphic purposes. Draw in memory space. Next, for each component, the component area is cut out from the 3D shape using the component specifications in the component connection list, and each component is painted in the color of the component group and drawn in the graphics memory space. This process is executed for all parts, and the process ends.

FIG. 12 shows the data structure of various data D1 in the storage device A10 in this embodiment. Various data D1 includes a plurality of 3D-CAD data D100, the number of 3D-CAD data, a piping parts list D101, the number of piping parts lists, an analysis condition list D102, a parts connection list D103, the number of parts connection lists, simulation results D104, and simulation results. It consists of the number, the turning strength calculation result D105, the number of turning strength calculation results, the parts group list D106, the prediction model of the part group D107, the turning strength estimation result D108, the number of turning strength estimation results, the part category number, and other variables.

The 3D-CAD data D100 is data that expresses the shape of a piping system using points and meshes. The piping parts list D101 is a list in which the types and specifications of each part constituting the piping system are listed for all parts. The analysis condition list D102 describes analysis conditions and simulation models necessary for executing the 3D fluid simulation. The component connection list D103 is a list listing the connection relationships of components constituting the piping system. The simulation result D104 describes physical quantities such as pressure and flow velocity obtained for each mesh and point as a result of executing the 3D fluid simulation. The swirling strength calculation result D105 stores the results of calculating the tube axis coordinates and swirling strength from the simulation result D104. The turning strength estimation result D108 stores the result of estimating the turning strength in the tube axis coordinates by the simple turning strength estimation process, and has basically the same data structure as the turning strength calculation result D105. The parts group list D106 stores the results of creating parts groups to which the prediction model is applied. The component group prediction model stores a prediction model of turning strength for each component group. The component category number stores the current category number when extracting a component group.

FIG. 13 shows the data structure of the 3D-CAD data D100 and the piping parts list D101 in this embodiment. The 3D-CAD data D100 is composed of a 3D-CAD data ID, the number of cells in a mesh, the number of points in a mesh, a plurality of point information, and a plurality of mesh information.

The 3D-CAD data ID is used to identify multiple 3D-CAD data. The number of points in the data is the number of points that make up the shape of the piping system that is the subject of the 3D-CAD data. The number of meshes in the data is the number of meshes when the piping system that is the subject of 3D-CAD data is divided into multiple meshes.

Point information is information about one of the points that make up the shape of the piping system that is the subject of 3D-CAD data, and consists of a point ID, X coordinate, Y coordinate, and Z coordinate. Point ID is used to identify multiple points. The X coordinate, Y coordinate, and Z coordinate are the coordinates of the position of the point in the 3D-CAD data.

Mesh information is information about the mesh when the piping system is divided into multiple meshes, and is made up of the number of mesh constituent points, mesh ID, and multiple point IDs. The number of mesh constituent points is the number of points making up the mesh. The mesh ID is used to identify multiple meshes. The plurality of point IDs indicate the IDs of the points that constitute the mesh, and correspond to the point IDs in the point information.

The piping parts list D101 is made up of a piping parts list ID, the number of piping parts, a plurality of piping parts information D1010, and a 3D-CAD data ID. The piping parts list ID is used to identify multiple piping parts lists. The number of piping parts is the number of parts constituting the piping system. The piping parts information D1010 is information that describes the specifications and types of parts that make up the piping. The 3D-CAD data ID indicates the ID of the 3D-CAD data of the piping system targeted by the piping parts list ID, and corresponds to the 3D-CAD data ID in the 3D-CAD data described above.

FIG. 13 shows the data structure of piping component information D1010 in this embodiment. Piping component information D1010 includes component type, component name, number of starting points, starting point information for the number of starting points, number of ending points, end point information for the number of ending points, number of transit points, transit point information for the number of transit points, representative point information, and outside the entrance side. Diameter, outlet side outer diameter, way point outer diameter, inlet side curvature radius, outlet side curvature radius, way point curvature radius, inlet side angle, outlet side angle, way point angle, inlet side tube axis length, outlet side tube axis length It consists of the pipe axis length of the intermediate point, the pipe axis length of the entire part, and the part ID.

The part type is a number indicating the type of the target part, such as a straight pipe, elbow, T-shaped pipe, S-shaped pipe, flowmeter, pump, or valve. The component name is the name of the target component, and may simply indicate a straight pipe or may indicate the model number of the component. The number of starting points indicates the number of center points of the most upstream cross section of the component; for example, in the case of a T-shaped pipe with two inlets, the number of starting points is two. The number of end points indicates the number of center points of the most downstream cross section of the component; for example, in the case of a T-shaped pipe with three outlets, the number of starting points is three. When the number of passages in a piping system is greater or less than the number of inlets and outlets, or when the bending angle changes along the way, such as in an S-shaped pipe, the number of transit points is determined by For example, in the case of an irregular pipe with two inlets, one outlet, and three flow paths, the number of transit points is three. In addition, in the case of an irregular pipe with three inlets, two outlets, and a point where the flow paths are concentrated into one, the number of transit points is one. In the case of an S-shaped pipe, there is one inlet and one outlet, and even though the number of channels is one, there are two types of bending angles, upstream and downstream, so the number of transit points is two.

The starting point information indicates the center point of the most upstream section of the component, the end point information indicates the center point of the most downstream section of the component, and the via point information indicates the center point of the cross section that is representative of the flow path of the component. Each consists of the start and end point ID, X coordinate, Y coordinate, Z coordinate, outer diameter, radius of curvature, bending angle, and tube axis length. The starting and ending point IDs are used to identify multiple pieces of starting point information, ending point information, and transit point information. The X, Y, and Z coordinates indicate the three-dimensional coordinates of the center point of each cross section. The outer diameter is the radius of each cross section, and the radius of curvature indicates the radius of curvature of a curve when a curve is drawn with respect to a cross section upstream or downstream from the cross section in a component such as an elbow. The bending angle indicates the angle at which the flow path is bent when the flow path is bent in a component such as an elbow. The tube axis coordinates indicate the coordinates of the cross section of the flow path in the tube axis direction, and are calculated by setting the tube axis position of the first starting point to 0. For example, if there are two or more flow paths, calculate the pipe axis coordinates from the first starting point to the via point that becomes the branch, and for the pipe axis coordinates of the starting point that leads to the branch, use the pipe axis coordinates of the nearest via point as the base point. calculate. If the pipe axis coordinates to the way point that is a branch are 3.0 (m), and the distance from the starting point that leads to the branch to the way point that is a branch is 5.0 (m), the pipe axis coordinates of the starting point that leads to the branch is 3.0- 5.0=-2.0(m).

Representative point information indicates the position of the representative point of the part, for example, for a straight pipe, the center position of the cross section at the midpoint of the line connecting the most upstream and downstream parts of the part, and the X coordinate, Y coordinate, and Z It is made up of coordinates. The tube axis length of the entire component indicates the length of the entire component in the tube axis direction, and specifically indicates the maximum value of the tube axis coordinates in the end point information. The part ID is used to identify one of the many parts.

FIG. 15 shows the data structure of the analysis condition list D102 in this embodiment. The analysis condition list D102 includes a plurality of simulation conditions, the number of simulation conditions, a plurality of simulation models, the number of simulation models, a plurality of simulation condition constant information, and a plurality of simulation model constant information.

A simulation condition is a collection of a plurality of simulation condition constants, and includes a simulation condition ID, a simulation condition name, and a plurality of simulation condition constants. The simulation condition ID is an identifier for a plurality of simulation conditions. The simulation condition name is a character string that describes the name of the simulation condition. A simulation condition constant is one of a group of physical constants representing a simulation condition, and consists of an ID and a constant. The ID is an identifier of a plurality of simulation condition constants, and the value indicates the value of the physical constant indicated by the identifier. For example, if the ID indicates the initial value of the pressure inside the pipe, the value contains a specific numerical value indicating the initial value of the pressure inside the pipe.

A simulation model is a collection of a plurality of simulation model constants, and consists of a simulation model ID, a simulation model name, and a plurality of simulation model constants. The simulation model ID is an identifier among multiple simulation models. The simulation model name is a character string that describes the name of the simulation model. A simulation model constant is one of a group of coefficients in a mathematical formula representing a simulation model, and is made up of an ID and a constant. The ID is an identifier of a plurality of simulation model constants, and the value indicates the value of the coefficient of the formula indicated by the identifier. For example, if the ID indicates an influence coefficient of the pressure at the current time on the pressure at the next time, the value contains a specific numerical value indicating the influence coefficient.

The simulation condition constant information indicates which physical constant is included in which ID in the simulation condition constants, and consists of an ID, a name, and a constant name. The ID is an identifier of a plurality of simulation condition constants, and the name is the name of the simulation condition constant. The constant name is the constant name of the simulation condition constant in the simulation calculation program. For example, if the ID indicates the initial value of the pipe pressure, the name will contain the character string "Initial pipe pressure", and the variable name will contain the name of the constant for the initial pipe pressure used in the simulation calculation program. .

The simulation model constant information indicates which ID contains the coefficient of which formula in the simulation model constants, and consists of an ID, a name, and a constant name. The ID is an identifier of a plurality of simulation model constants, and the name is the name of the simulation model constant. The constant name is the constant name of the simulation model constant in the simulation calculation program. For example, if the ID indicates the influence coefficient of the pressure at the current time on the pressure at the next time, the name will contain "Influence coefficient of the pressure at the current time on the next time", and the variable name will contain the coefficient used in the simulation calculation program. Contains the constant name of the influence coefficient.

FIG. 16 shows the data structure of the component connection list D103 in this embodiment. The component connection list consists of a component connection list ID, the number of nodes, node information for the number of nodes, the number of links, link information for the number of links, and a piping component list. The component connection list ID is used to identify multiple component connection lists. The number of nodes indicates how many nodes in the piping system are the most upstream or downstream cross sections of the component.

The node information is information about a node that is the most upstream or downstream cross section of a part, and is made up of a node ID, an X coordinate, a Y coordinate, a Z coordinate, a connecting link ID1, a connecting link ID2, and other information. The node ID is used to identify multiple nodes. The X, Y, and Z coordinates indicate the position of the node. Connection link ID1 and connection link ID2 indicate IDs of two links connected on a node, and correspond to link IDs in link information described later. Other information is other information regarding the node, and the contents of the start point information and end point information in the piping component information may be copied as is.

The number of links indicates how many links there are in the piping system when the parts themselves are considered as links. Link information is information about links when the part itself is regarded as a link, and includes the link ID, representative point X coordinate, representative point Y coordinate, representative point Z coordinate, part ID, pipe axis length of the entire part, number of connected nodes, and connection. It consists of connected node IDs, component group IDs, and other information for the number of nodes.

The link ID is used to identify multiple links. The representative point X coordinate, the representative point Y coordinate, and the representative point Z coordinate indicate the position of the representative point of the part. The component ID indicates which piping component it corresponds to, and corresponds to the component ID in the piping component information. The tube axis length of the entire component indicates the length of the component in the tube axis direction, and is used when calculating the tube axis coordinates. The number of connected nodes indicates the number of nodes owned by the link. The connected node ID indicates the ID of the node owned by the link, and corresponds to the node ID in the node information. The component group ID indicates which component group the link belongs to, and corresponds to the component group ID in the component group list described later. The piping component list ID indicates which piping component list D101 the component connection list targets, and corresponds to the piping component list ID in the piping component list D101.

FIG. 17 shows the data structure of the simulation result D104 in this embodiment. The simulation result D104 includes the simulation result ID, 3D-CAD data ID, analysis condition ID, component connection list ID, total number of all mesh points, simulation model ID, total number of meshes, total time sample number, piping parts list ID, and per unit time. It consists of simulation results.

The simulation result ID is for identifying a plurality of simulation results D104. The 3D-CAD data ID indicates which 3D-CAD data D100 was used for the simulation, and corresponds to the 3D-CAD data ID in the 3D-CAD data D100. The analysis condition ID indicates which analysis condition was used for the simulation, and corresponds to the analysis condition ID in the analysis conditions. The component connection list ID indicates the component connection list D103 generated from the piping component list D101 used in the simulation, and corresponds to the component connection list in the component connection list D103. The total number of all mesh points indicates the number of all the points constituting the entire mesh in the 3D-CAD data D100 used for the simulation, and is basically equal to the number of points within the data of the 3D-CAD data. The simulation model ID indicates which simulation model was used in the simulation, and corresponds to the simulation model ID in the simulation model. The total number of meshes indicates the total number of meshes in the 3D-CAD data D100 used for simulation, and is basically equal to the number of meshes in the 3D-CAD data. The total number of time samples indicates the number of time samples in the simulation results. For example, if the sampling period is 0.1 (s) and the simulation time is 30 (s), the total time sample number is the simulation time divided by the sampling period. , 30/0.1=300. The piping parts list ID indicates which piping parts list D101 was used for the simulation, and corresponds to the piping parts list ID in the piping parts list D101.

The simulation result per unit time indicates the simulation result for one sample, and consists of the time ID, the time on the simulation, the point unit physical quantity for the total number of all mesh points, and the mesh unit physical quantity for the total number of meshes.

The time ID is used to identify simulation results per unit time. The time on the simulation indicates at what time on the simulation the simulation result per unit time is.

The point unit physical quantity represents the value of the physical quantity at the coordinates of the points forming the mesh on the pipe. A point unit physical quantity is composed of a point ID, the number of physical quantity types, and the physical quantities equal to the number of physical quantity types. The point ID is an ID for linking which point information corresponds to a point unit physical quantity. The physical quantity indicates the physical quantity at the coordinates indicated by the point information, and consists of the number of dimensions and the number of physical quantity elements corresponding to the number of dimensions. For example, if it is a physical quantity indicating a scalar amount of pressure inside a pipe, the number of dimensions is 1, and the value of the scalar amount of pressure inside a pipe is entered in the physical quantity element. On the other hand, if it is a physical quantity indicating a three-dimensional vector value of flow velocity, the number of dimensions is three, and the three physical quantity elements include the X-axis direction component, Y-axis direction component, and Z-axis direction component of the flow velocity, respectively.

The mesh unit physical quantity represents the value of the physical quantity at the center coordinates of the mesh on the pipe. A mesh unit physical quantity consists of a mesh ID, the number of physical quantity types, and the physical quantities equal to the number of physical quantity types. The mesh ID is an ID for associating which mesh corresponds to a point unit physical quantity. The physical quantity indicates the physical quantity at the representative coordinates of the mesh, and consists of the number of dimensions and the number of physical quantity elements corresponding to the number of dimensions.

FIG. 18 shows the data structure of the turning strength calculation result or the turning strength estimation result D108 in this embodiment. The swing strength calculation result D105 includes the swing strength calculation result ID, 3D-CAD data ID, simulation result ID, piping parts list ID, analysis condition ID, total time sample number, pipe axis coordinate number, simulation model ID, and component connection list ID. , a calculation result of swirling strength per unit time for the total number of time samples, and a calculation result of swirling strength per tube axis coordinate for the number of tube axis coordinates. Note that the turning strength estimation result is obtained by removing the simulation result ID, the total time sample number, and the turning strength calculation result per unit time from the turning strength calculation result.

The turning strength calculation result ID is for identifying one of the many turning strength calculation results D105. The 3D-CAD data ID indicates which 3D-CAD data D100 was used to calculate the target turning strength calculation result D105, and corresponds to the 3D-CAD data ID in the 3D-CAD data D100. The simulation result ID indicates from which simulation result D104 the target turning strength calculation result D105 was calculated, and corresponds to the simulation result ID in the simulation result D104. The piping parts list ID indicates which piping parts list D101 was used to calculate the turning strength, and corresponds to the piping parts list ID in the piping parts list D101. The analysis condition ID indicates which analysis condition was used for the simulation, and corresponds to the analysis condition ID in the analysis conditions. The total number of time samples indicates the number of time samples in the simulation results. The number of tube axis coordinates indicates how many tube axis coordinates are taken when calculating the turning strength for each tube axis coordinate.For example, for a piping system with a length of 20 m in the tube axis direction, the tube axis If the turning strength is calculated for each coordinate of 0.5 (m), it will be 20÷0.5=40. The simulation model ID indicates which simulation model was used in the simulation, and corresponds to the simulation model ID in the simulation model. The component connection list ID indicates the component connection list D103 generated from the piping component list D101 used in the simulation, and corresponds to the component connection list in the component connection list D103.

The turning strength calculation result per unit time is information about the turning strength calculated from the simulation result per unit time among the simulation results D104 indicated by the simulation result ID. The rotation strength calculation result per unit time consists of the time ID, the simulation time, and the rotation strength per tube axis coordinate for the number of tube axis coordinates. The time ID is used to identify simulation results per unit time. The time on the simulation indicates at what time on the simulation the simulation result per unit time is.

The turning strength per tube axis coordinate indicates the turning strength at the simulation time linked to the time ID and the specific tube axis coordinate, and the turning strength per tube axis coordinate ID, tube axis coordinate, part ID, and turning strength. It consists of The tube axis coordinate ID is used to identify the many tube axis coordinates. The tube axis coordinate indicates the actual value of the tube axis coordinate, such as 0.2 (m) or 2.0 (m). The component ID indicates the ID of the component existing on the pipe axis coordinates, and corresponds to the component ID in the piping component information D1010.

The calculation result of swirl strength per tube axis coordinate shows the statistics regarding time of swirl strength at a specific tube axis coordinate, and includes the tube axis coordinate ID, tube axis coordinate, component ID, swirl strength time average, and swirl strength. It consists of standard deviation, point color, point size, point shape, line color, line thickness, number of lines, and information indicating whether the line is solid or dotted.

The tube axis coordinate ID is used to identify the many tube axis coordinates. The tube axis coordinate indicates the value of the actual tube axis coordinate. The component ID indicates the ID of the component existing on the pipe axis coordinates, and corresponds to the component ID in the piping component information D1010. The above IDs are the same as the calculation results of turning strength per unit time.

The time-averaged swirling strength is the average value of the swirling strength per unit time at a specific tube axis coordinate with respect to time. The swirling strength standard deviation is the standard deviation of the swirling strength per unit time with respect to time at a specific tube axis coordinate.

The color, size, and shape of a point are the color, size, and shape specified when drawing a graph of swirling strength in tube axis coordinates as a point. In addition, the information indicating the color, thickness, number, and solid or dotted line of the line is the color, thickness, number, and solid line or dotted line specified when drawing the line of the graph of swirling strength in the pipe axis coordinates or the three-dimensional shape of the piping system. This is information indicating the dotted line.

FIG. 19 shows the data structure of the parts group list D106 in this embodiment. The parts group list D106 includes the number of parts, part information for the number of parts, the number of first parts, the first part ID for the number of first parts, the number of last parts, the last part ID, the number of part groups, and the part group information for the number of glue parts. It consists of the number of first part groups, the number of first part group IDs corresponding to the number of first part groups, the number of last part groups, and the last part group IDs corresponding to the number of last part groups.

The number of parts indicates the number of parts in the piping system targeted by the parts group list. The part information indicates which part group ID the part belongs to, and includes the part ID, link ID, number of front parts, front part ID for the number of front parts, number of rear parts, and rear parts for the number of rear parts. It consists of an ID and a parts group ID.

The component ID indicates information about which component in the piping system, and corresponds to the component ID in the piping component information D1010. The link ID indicates which link ID the target component corresponds to, and corresponds to the link ID in the link information in the component connection list D103. The number of front parts indicates the number of parts adjacent to the downstream side of the target part. The front component ID indicates a component ID adjacent to the downstream side of the target component, and corresponds to the component ID in the piping component information D1010. The number of rear parts indicates the number of parts adjacent to the upstream side of the target part. The rear component ID indicates a component ID adjacent to the upstream side of the target component, and corresponds to the component ID in the piping component information D1010. The component group ID indicates which component group the target component belongs to, and corresponds to the component group ID in component group information described later.

The number of leading parts indicates the number of parts that are the most upstream in the piping system. The head component ID indicates the ID of the most upstream component in the piping system, and corresponds to the component ID in the piping component information D1010. The number of terminal parts indicates the number of parts that are the most downstream in the piping system. The terminal component ID indicates the ID of the most downstream component in the piping system, and corresponds to the component ID in the piping component information D1010.

The number of component groups indicates how many component groups are formed in the piping system that is the target of the component group list. The parts group information is information on piping parts that are the targets of the parts group list, organized into groups. The component group information includes the component group ID, the number of components, the component ID for the number of components, the prediction model ID, the number of parent component groups, the parent component group ID for the number of parent component groups, the number of upstream component groups, and the number of upstream component groups. Upstream part group ID, number of downstream part groups, downstream part group ID for the number of downstream part groups, dot color, dot size, dot shape, line color, line thickness, number of lines, and whether to use solid or dotted lines. It consists of information that indicates the

The component group ID is used to identify a large number of component group information in the component group list. The number of parts is the number of parts constituting the parts group. The component ID is the number of components constituting the component group, and corresponds to the component ID in the component information and the component ID in the piping component information D1010. The prediction model ID indicates the ID of the prediction model corresponding to the target parts group, and corresponds to the prediction model ID in the parts group prediction model D107 described later.

The number of parent component groups indicates the number of component groups that are parents of the target component group in the binary tree structure formed by component groups in the piping system. There is basically one parent part group, but it is made into multiple groups in case a branch occurs due to a T-shaped pipe, etc. The parent component group ID indicates the component group ID that is the parent of the target component group in the binary tree structure formed by component groups in the piping system. The number of upstream component groups indicates the number of component groups located on the upstream side among component groups that are children of a target component group in a binary tree structure formed by component groups in a piping system. The upstream component group ID indicates the component group ID located on the upstream side among the component group IDs that are children of the target component group in the binary tree structure formed by component groups in the piping system. The number of downstream component groups indicates the number of component groups located on the downstream side among component groups that are children of a target component group in a binary tree structure formed by component groups in a piping system. The downstream component group ID indicates one of the component group IDs that are children of the target component group and is located on the downstream side in the binary tree structure formed by component groups in the piping system.

The color, size, and shape of the point are the color, size, and shape specified when drawing the graph of swirling strength in the tube axis coordinates as points, and the color, size, and shape of the point in the swirling strength calculation result D105. Linked. In addition, the information indicating the color, thickness, number, and solid or dotted line of the line is the color, thickness, number, and solid line or dotted line specified when drawing the line of the graph of swirling strength in the pipe axis coordinates or the three-dimensional shape of the piping system. This information indicates a dotted line, and is linked to the information indicating the color, thickness, number, and solid line or dotted line of the line in the turning strength calculation result D105.

The number of leading component groups indicates the number of component groups that are the most upstream in the piping system targeted by the component group list D106. The first component group number indicates the component group ID that is the most upstream component in the piping system that is the target of the component group list D106. The number of terminal component groups indicates the number of component groups that are the most downstream in the piping system targeted by the component group list D106. The terminal component group number indicates the component group ID that is the most downstream component group in the piping system that is the target of the component group list D106.

FIG. 20 shows the data structure of the component group prediction model D107 in this embodiment. The parts group prediction model D107 is made up of the number of prediction models and the number of prediction models corresponding to the number of prediction models. The number of predictive models is the number of predictive models in the predictive model D107 of the parts group. The prediction model is a parameter table for estimating downstream swirl strength, organized for each component group. The prediction model includes the prediction model ID, the Reynolds number, the number of parts, the part type for the number of parts, the inlet side information, the outlet side information, the number of transit points, the transit point information for the number of transit points, the straight pipe length, the number of pipe axis coordinates, and the inlet. It consists of the side swirl strength, the tube axis length of the entire component group, the time average of the outlet side swirl strength, the standard deviation of the outlet side swirl strength, and the intermediate swirl strength information of the number of tube axis coordinates minus 2.

The prediction model ID is used to identify one of the many prediction models. The Reynolds number is a dimensionless quantity related to fluid characteristics calculated from the representative length, kinematic viscosity coefficient, and representative flow velocity. The number of parts is the number of parts constituting the parts group targeted by the prediction model. The component type is the type of component that constitutes the component group that is the target of the prediction model, and corresponds to the component type of the piping component information D1010. The inlet side information, outlet side information, and way point information are information regarding the outer diameter, angle, and tube axis coordinates of the most upstream, most downstream, and way points of the component group, respectively. The outer diameter indicates the radius of the most upstream, most downstream, or via point. The angle indicates how many times the course at the most upstream, downstream, or via point turns. The tube axis length indicates the tube axis coordinates of the most upstream, most downstream, or via points, and is based on the tube axis coordinates in the first inlet side information.

The straight pipe portion length indicates the straight pipe length of the component group targeted by the prediction model. The number of tube axis coordinates indicates how many tube axis coordinates are taken for the swirling strength indicated by the target prediction model, and the number of intermediate swirling strength information includes two of the swirling strength on the entrance side and the swirling strength on the exit side. It is the sum of The tube axis length of the entire component group indicates the length of the entire component group in the tube axis direction. The entrance side turning strength indicates the entrance side turning strength which is the premise of the prediction model. The exit side swirl strength time average is based on the conditions assumed by the prediction model, specifically the inlet side information, exit side information, waypoint information, Reynolds number, part type, straight pipe length, and pipe axis length of the entire part group. This shows the actual value or estimated value of the time average of the exit side swirling strength in relation to the entrance side swirling strength. The exit side turning strength standard deviation indicates the actual value or estimated value of the time-related standard deviation of the exit side turning strength under the conditions assumed by the prediction model.

The intermediate swirl strength information consists of a tube axis coordinate ID, a tube axis coordinate, a swirl strength time average, and a swirl strength standard deviation. The tube axis coordinate ID is used to identify the many tube axis coordinates in the prediction model. The tube axis coordinate indicates the actual value of the tube axis coordinate corresponding to the tube axis coordinate ID. The time average of the swirl strength indicates the conditions assumed for the prediction model and the time average of the swirl strength in the tube axis coordinates. Furthermore, the standard deviation of the swirling strength indicates the conditions assumed for the prediction model and the standard deviation of the swirling strength over time in the tube axis coordinates.

FIG. 21 is a table showing an example of component group determination in this embodiment. From left to right, the columns in the table show the part ID, part type, part orientation, length in the tube axis direction, angle, recognition results of Steps 1 to 4, and final part color. The orientation of the elbow and T-tube was unified at 90 degrees, and only the tube axis length was used to determine the degree of increase in turning strength.

First, in Step 1, among combinations in which a straight pipe is sandwiched between other parts, the pipe axis length is determined for combinations in which the flow path does not fit in one plane. The combination of straight pipe #4, straight pipe #5, straight pipe #6, straight pipe #7, straight pipe #8, or straight pipe #13 does not fit on one plane. Among these, the combination that sandwiched straight pipe #8 has the shortest pipe axis length, so in Step 1, the combination that sandwiched straight pipe #8 between valve #1 and elbow #6 is selected as a component group, and 1 to 13 are the upstream side, 17 to 33 are the downstream side, and recursive processing is executed for each in Step 2. In Step 2, since there are still combinations of configurations on both the upstream and downstream sides, the combinations of configurations are extracted for each to determine the tube axis length. Among these, on the upstream side, the combination that sandwiched straight pipe #4, straight pipe #5, or straight pipe #6 corresponds, and on the downstream side, the combination that sandwiched straight pipe #13 corresponds. On the downstream side, the combination of straight pipe #18 sandwiched between elbow #9 and elbow #10 is automatically extracted as a parts group, and with this part group as the boundary, parts IDs 17 to 23 are on the upstream side, and parts IDs 27 to 33 are on the upstream side. on the downstream side, and perform recursive processing for each in Step 3. On the other hand, on the upstream side of the parts group extracted in Step 2 above, the combination of straight pipe #5 with the shortest pipe axis length sandwiched between T-shape #1 and elbow #4 is selected as a parts group, and parts IDs 1 to 7 are selected as a part group. The upstream side and parts IDs 11 to 13 are treated as the downstream side, and recursive processing is executed for each in Step 3.

In Step 3, upstream of Step 2 and upstream of Step 3, upstream of Step 2 and downstream of Step 3, downstream of Step 3 and upstream of Step 2, downstream of Step 2 and downstream of Step 3, , since the flow paths of combinations in which a straight pipe is sandwiched between other parts fit on one plane, the category number is incremented by 1 and combinations where the flow paths fit on one plane are extracted as part groups. On the upstream side of Step 2 and the upstream side of Step 3, since the combination including straight pipe #2 or straight pipe #3 is applicable, the pipe axis length is determined for each, and the combination with the shortest pipe axis length is straight pipe #3. Select the combination sandwiched between elbow #2 and elbow #3 as a parts group, divide other parts into upstream and downstream sides with this part group as a boundary, and proceed to Step 4. Since there is no matching upstream of Step 2 and downstream of Step 3, the category number is incremented by 1 and combinations of straight pipes and other types are extracted as part groups. Since there are no matching combinations of straight pipes and other types, advance the category by one and proceed to Step 4.

On the downstream side of Step 3 and upstream of Step 2, the combination that includes straight pipe #10 or straight pipe #11 is applicable, so straight pipe #11 with the shortest pipe axis distance is connected to T-shaped pipe #2 and elbow #8. Extract the sandwiched combination as a parts group, divide other parts into upstream and downstream parts with this part group as a boundary, and recursively execute Step 4. On the downstream side of Step 2 and on the downstream side of Step 3, only the combination in which straight pipe #15 is sandwiched between elbow #11 and elbow #12 is applicable, so this combination is automatically selected as a parts group, and this part group is bordered. Then separate the other parts into upstream and downstream parts and proceed to Step 4.

In Step 4, since there is no combination of a straight pipe sandwiched between other parts in any tributary, the category number is incremented by 1 and the combination of a straight pipe and other parts is extracted as a parts group. Since straight pipe #1 and straight pipe #2 correspond to the upstream side of Step 2, upstream side of Step 3, and upstream side of Step 4, the combination of straight pipe #1 and elbow #1, which have the shortest pipe axis length, is selected. Select it as a parts group, select the remaining straight pipe #2 as a parts group, and finish processing this tributary. Furthermore, since only straight pipe #4 remains on the upstream side of Step 2, upstream of Step 3, and downstream of Step 4, straight pipe #4 is selected as a component group and the processing of this tributary is ended. On the upstream side of Step 2 and the downstream side of Step 3, the combination with straight pipe #6 or straight pipe #7 corresponds, so the combination of straight pipe #6 and elbow #5, which have the shortest pipe axis length, is grouped into the parts group. , select the remaining straight pipe #7 as a component group, and finish processing this tributary.

On the downstream side of Step 2, the upstream side of Step 3, and the upstream side of Step 4, the combination with straight pipe #9 or straight pipe #10 corresponds to the combination with straight pipe #7 and straight pipe #10, which have a short pipe axis length. Select the combination as a parts group, select the remaining straight pipe #9 as a parts group, and finish processing this tributary. On the downstream side of Step 2, the upstream side of Step 3, and the downstream side of Step 4, only straight pipe #12 remains, so straight pipe #12 alone is selected as a component group, and the processing of this tributary is ended. Since only straight pipe #14 remains on the downstream side of Step 2, downstream of Step 3, and upstream of Step 4, straight pipe #12 alone is selected as a component group and processing of this tributary is ended. On the downstream side of Step 2, on the downstream side of Step 3, and on the downstream side of Step 4, straight pipe #16, straight pipe #17, and straight pipe #18 are continuous, so select them together as a part group and use this tributary. Terminates the process.

By setting a color for each component group for each component group, a color is set for each component group.

FIG. 22 is an example of a screen displayed on the display in this embodiment. The screen displayed on the display consists of a pipe axis coordinate-physical statistics graph output screen G1 and a piping system 3D data output screen G2. The tube axis coordinate-physical statistics graph output screen G1 displays a graph of the turning strength against the tube axis coordinate, with the upstream portion shown in the upper row and the downstream portion shown in the lower row. The horizontal axis shows the tube axis coordinates, and the vertical axis shows the time average of the swirling strength. Each component group is color-coded, and the component name is written in the component area.

The piping system 3D data output screen G2 is a three-dimensional shape of the piping system projected and drawn two-dimensionally from a specific viewpoint, and each part is drawn in a color-coded manner. In addition, character strings for component names and flow direction arrows are drawn near each component.

In this embodiment, in a turning evaluation support device that estimates the turning strength of a piping system, a plurality of parts constituting the piping system are divided into one or a group of two or more consecutive parts, and the most upstream part of the group is an arithmetic device that calculates a turning strength at at least one position downstream of the most upstream position and upstream of the most downstream position of the group, based on the turning strength at the position, specifications of the parts constituting the group, and analysis conditions; A1, and a display device A2 that displays the turning strength for each group.

According to the present embodiment configured as described above, a plurality of parts constituting a piping system are divided into groups each consisting of one or two or more consecutive parts, and each group consisting of one or two or more consecutive parts is By estimating the turning strength, the accuracy of estimating the turning strength can be improved. Furthermore, since it is possible to visually confirm how the piping systems are grouped, it is possible to accurately distinguish between piping locations that require three-dimensional fluid analysis and piping locations that do not.

Furthermore, the arithmetic device A1 in this embodiment preferentially groups a first component group in which one or more continuous straight pipes are sandwiched between components other than straight pipes among the plurality of components. As a result, parts whose turning strength is expected to increase are preferentially grouped, so that it is possible to further improve the accuracy of estimating the turning strength.

Furthermore, the arithmetic device A1 in this embodiment preferentially groups a second component group whose tube axis positions do not fall within the same plane among the first component group. As a result, parts whose turning strength is expected to increase more are preferentially grouped, so that it is possible to further improve the accuracy of estimating the turning strength.

Furthermore, the arithmetic device A1 in this embodiment preferentially groups the third component group having the smallest tube axis length among the second component groups. As a result, parts whose turning strength is expected to increase more are preferentially grouped, so that it is possible to further improve the accuracy of estimating the turning strength.

Further, the specifications of the parts constituting the piping system in this embodiment include the diameter, the center position of the most upstream pipe cross section, the center position of the most downstream pipe cross section, the radius of curvature, and the bending angle of the flow path. This makes it possible to evaluate the swirl strength based on the diameter, the center position of the most upstream pipe cross section, the center position of the most downstream pipe cross section, the radius of curvature, and the bending angle of the flow path.

Furthermore, the display device A2 in this embodiment changes the method of drawing the turning strength for each group. This makes it possible to visually confirm the turning strength of each group.

Furthermore, the display device A2 in this embodiment draws each component constituting the piping system, and changes the method of filling in the components for each group. This makes it possible to visually confirm how the piping systems are grouped.

Further, the swirl strength in this embodiment is expressed as a time average of the number of swirls. This makes it possible to evaluate the swirl strength based on the time average of the swirl number.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above, and includes various modifications. For example, the embodiments described above are described in detail to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the configurations described.

A1...Turning evaluation support section (computation device), A10...Storage device, A2...Display output section (display device), A3...Operation input section, B1...3D-CAD data/piping parts list/analysis condition storage section, B2... Piping component relationship recognition section, B20... Node/link extraction section, B21... Node/link connection section, B3... 3D fluid analysis section, B30... 3D simulation section, B31... Turning strength calculation section, B4... Turning strength simple estimation section, B40...Parts group division section, B400...3D/plane/curve/single item category setting section, B401...Turning strength increasing component group extraction section, B402...Upstream/downstream separation section, B403...Parts group list creation section, B41...Prediction model Storage section, B42...Prediction model application section, B43...Detailed analysis execution determination section, B5...Visualization section, B50...Part color specification section, B51...Graph output section, B52...3D shape output section, D1...Various data, D100... 3D-CAD data, D101... Piping parts list, D1010... Piping parts information, D102... Analysis condition list, D103... Parts connection list, D104... Simulation results, D105... Turning strength calculation results, D106... Parts group list, D107... Parts Group prediction model, D108... Turning strength estimation result, F2... Part connection list creation processing, F3... 3D fluid analysis processing, F4... Turning strength simple estimation processing, F40... Part group division processing, F401... Part group with highest turning strength Extraction processing, F50...Parts color specification processing, F51...Graph output processing, F52...3D shape output processing, G1...Pipe axis coordinates-physical statistics graph output screen, G2...Piping system 3D data output screen.

Claims (8)

In a turning evaluation support device that estimates the turning strength of a piping system,
A plurality of parts constituting the piping system are divided into groups consisting of one or two or more consecutive parts, and based on the swirling strength at the most upstream position of the group, specifications of the parts constituting the group, and analysis conditions. a calculation device that calculates a turning strength at at least one position downstream of the most upstream position and upstream of the most downstream position of the group;
A turning evaluation support device comprising: a display device that displays the turning strength for each group. The turning evaluation support device according to claim 1,
The turning evaluation is characterized in that, among the plurality of parts, the calculation device preferentially groups a first parts group in which one or more continuous straight pipes are sandwiched between parts other than straight pipes. Support equipment. The turning evaluation support device according to claim 2,
The turning evaluation support device is characterized in that the calculation device preferentially groups a second group of parts whose tube axis positions do not fall within the same plane among the first group of parts. The turning evaluation support device according to claim 3,
The turning evaluation support device is characterized in that the calculation device preferentially groups a third group of parts having the smallest tube axis length among the second group of parts. The turning evaluation support device according to claim 1,
The turning evaluation support is characterized in that the specifications of the parts constituting the piping system include the diameter, the center position of the most upstream pipe cross section, the center position of the most downstream pipe cross section, the radius of curvature, and the bending angle of the flow path. Device. The turning evaluation support device according to claim 1,
The turning evaluation support device is characterized in that the display device changes a method of drawing the turning strength for each group. The turning evaluation support device according to claim 1,
The turning evaluation support device is characterized in that the display device draws each part constituting the piping system, and changes a method of filling in the parts for each group. The turning evaluation support device according to claim 1,
A turning evaluation support device, wherein the turning strength is expressed as a time average of a swirl number.

Images