CN115146392A - Ship pipeline system modeling simulation method, computer storage medium and equipment - Google Patents
Ship pipeline system modeling simulation method, computer storage medium and equipment Download PDFInfo
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Abstract
The application relates to the technical field of ships, in particular to a ship pipeline system modeling method, a computer storage medium and equipment. In different stages of demonstration, design, construction, debugging and the like of the ship pipeline system, aiming at the specific simulation and calculation requirements for the dynamic operating characteristics of the ship pipeline system, a ship pipeline system simulation model is quickly established by a parameterization method, a model library and a working medium physical property parameter library are established, a graphical module in the model library can be selected according to the actual ship pipeline system to form a topological relation graph, then the ship pipeline system is parameterized and boundary parameters are established, then simulation calculation is carried out, the quick simulation of the specific object complex ship pipeline system is realized, different models in the model library and corresponding working medium parameters in the working medium physical property parameter library can be selected for different complex ship pipeline systems, the universality of the ship pipeline system modeling simulation method is enhanced, and the method has good and wide applicability.
Description
Technical Field
The application relates to the technical field of ships, in particular to a ship pipeline system modeling method, a computer storage medium and equipment.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
The ship pipeline system of the ship power device is complex in structure, the actual ship pipeline system consists of a large number of pipelines and pipeline connecting pieces, and the ship pipeline system accounts for twenty percent of the whole ship construction workload in the ship construction process. Most of the equipment is connected and used for conveying working media through a ship pipeline system. The actual requirements of the ship power device can be met only by complex work such as demonstration, design, construction and debugging, and therefore the ship pipeline system needs to be demonstrated through a simulation means. Firstly, modeling is carried out on a ship pipeline system from a one-dimensional system layer, one-dimensional system flow characteristic operation simulation and calculation are carried out on the basis, and then the dynamic operation characteristic of the ship pipeline system is fully known and known. The pipeline system of the ship power device is complex in structure, the actual operation relates to various working media and various physical states, and various complex heterogeneous components exist. Some large-scale complicated boats and ships pipe-line system relates to the arrangement in three-dimensional space, and length is longer, and the space width is big, moves towards complicacy. Generally speaking, a pipeline system of a ship power device can be operated after debugging is needed, and in an actual debugging operation stage, the dynamic operation characteristic of the pipeline system needs to be fully explored by means of simulation. Some current commercial software has a small application range when performing simulation modeling, and often needs a great deal of modification when performing simulation of pipeline systems of other different ship power plants.
Disclosure of Invention
The embodiment of the application aims to provide a ship pipeline system modeling simulation method, which is used for improving the universality of the ship pipeline system modeling simulation.
Another object of the embodiments of the present application is to provide a computer storage medium and a computer device for the ship management system modeling simulation method.
In a first aspect, a ship pipeline system modeling simulation method is provided, which includes the following steps:
1) Establishing a ship pipeline system parameterized model library: the pipeline assembly in the ship pipeline system comprises a pipeline and a pipeline connecting piece, and a universal pipeline assembly simulation model library is established and is used as the basis of modeling simulation; abstracting each type of pipeline component in a pipeline component simulation model library according to one-dimensional flow characteristics, performing mathematical modeling based on the physical process of actual one-dimensional flow, obtaining a parameterized model of each pipeline component through mathematical modeling and abstraction, forming the parameterized model library of each pipeline component, and forming each pipeline component into a graphical module;
establishing a physical property parameter form of a working medium of the ship pipeline system to form a working medium physical property parameter library of the ship pipeline system so as to select the required working medium and physical properties aiming at the ship pipeline system needing modeling simulation;
2) Connecting based on the graphical module formed in the step 1) according to the connection relation of pipeline components in the actual ship pipeline system, constructing a topological relation diagram, and forming a system simulation model of the ship pipeline system; establishing a parameter form of a connection relation between the connecting components, wherein the parameter form of the connection relation comprises a connection relation parameter between the pipeline components and a transfer relation parameter between the pipeline components;
3) Aiming at the topological relation graph of the ship pipeline system formed in the step 2), establishing an input parameter form of a system simulation model, wherein the input parameter form comprises a structure parameter and an initial parameter so as to carry out parameterization setting on the ship pipeline system;
4) Setting boundary parameters of the system simulation model in the step 2) according to the attributes of the ship pipeline system, wherein the boundary parameters comprise a flow boundary and a pressure boundary, the pressure boundary is used for transmitting the pressure parameters outwards, and the flow boundary is used for transmitting the flow parameters outwards;
5) And constructing a system simulation model, carrying out dynamic characteristic simulation calculation on the ship pipeline system, and establishing a simulation output parameter form, wherein the simulation output parameter form comprises output parameters changing along with time.
In a possible implementation scheme, in the step 1), the working medium of the ship pipeline system comprises water, oil and air, wherein the physical parameters of the working medium comprise a vapor phase and a liquid phase, and the oil comprises fuel oil and lubricating oil.
In a possible implementation scheme, in step 2), the topological relation graph comprises connections between pipelines, pipeline connectors are represented in the form of connection nodes, and the connection nodes are used for checking whether the pipelines needing to be connected are consistent with the pipeline starting point coordinates.
In a possible implementation, in step 2), the topological relation graph is constructed based on the three-dimensional space coordinates of the ship pipeline system.
In a possible implementation, in step 3), the structural parameters include diameter, wall thickness, roughness, and three-dimensional space coordinates, and the initial parameters include initial flow rate and initial pressure.
In a possible implementation scheme, the boundary parameter in step 4) further comprises an internal boundary, the internal boundary comprises connecting nodes between pipelines, and the internal boundary is used for transmitting parameters required by internal calculation of the ship pipeline system.
In a possible implementation scheme, the method for modeling and simulating the ship pipeline system further comprises a step of parameterization extension modification, and the model library and the parameters are extended and modified according to the contents in the steps 1) to 4) according to the actual conditions of the ship pipeline system.
In a second aspect, a computer storage medium is provided, which stores a computer program, and the program is executed by a processor to implement the method for modeling and simulating a ship pipeline system according to any one of the possible embodiments of the first aspect.
In a third aspect, a computer device is further provided, which includes a memory and a processor, where the memory stores a computer program, and the program is executed by the processor to implement the ship pipeline system modeling simulation method in any one of the possible embodiments of the first aspect.
The ship pipeline system modeling simulation method has the beneficial effects that:
in different stages of demonstration, design, construction, debugging and the like of the ship pipeline system, aiming at the specific simulation and calculation requirements for the dynamic operating characteristics of the ship pipeline system, a ship pipeline system simulation model is quickly established by a parameterization method, a model library and a working medium physical property parameter library are established, a graphical module in the model library can be selected according to the actual ship pipeline system to form a topological relation graph, then the ship pipeline system is parameterized and boundary parameters are established, simulation calculation is carried out, the quick simulation of the specific object complex ship pipeline system is realized, different models in the model library and corresponding working medium parameters in the working medium physical property parameter library can be selected for different complex ship pipeline systems, the universality of the ship pipeline system modeling simulation method is enhanced, and the method has good and wide applicability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a flow chart of an embodiment of a method for modeling and simulating a marine pipeline system according to the present application;
fig. 2 is a schematic view of a ship pipeline system parametric modeling simulation topological relation in an embodiment of a ship pipeline system modeling simulation method according to the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
According to a first aspect of the present application, a method for modeling and simulating a ship pipeline system is first provided, and refer to fig. 1 and 2. In the present embodiment, a ship pipe system of a ship power plant is described as an example.
The ship pipeline system modeling simulation method comprises the following steps:
1) Establishing a ship pipeline system parameterized model library: the pipeline assembly in the ship pipeline system comprises a pipeline and a pipeline connecting piece, and a universal pipeline assembly simulation model library is established and used as the basis of modeling simulation; the method comprises the steps of abstracting each type of pipeline assembly in a pipeline assembly simulation model library according to one-dimensional flow characteristics, carrying out mathematical modeling on the basis of the physical process of actual one-dimensional flow, obtaining a parameterized model of each pipeline assembly through mathematical modeling and abstraction, forming the parameterized model library of each pipeline assembly, and forming each pipeline assembly into a graphical module.
Specifically, the pipeline includes a circular pipe, a triangular pipe, a rectangular pipe, a hexagonal pipe and the like. The pipeline connecting piece comprises a three-way joint, a bent joint, a 90-degree folded pipe, a sudden expansion section, a sudden contraction section and the like.
The ship pipeline system in the embodiment is a ship pipeline system with a complex three-dimensional space structure, and comprises a plurality of pipelines and pipeline connecting pieces.
The one-dimensional flow characteristics in the present embodiment include the characteristics of pressure and flow rate along the flow direction of the ship pipeline system, which change with time. Because the various components have similarity respectively, the parameterized model of each component is obtained through mathematical modeling and abstraction. Parametric properties of individual components are involved, such as internal parameters, boundary parameters, process parameters. After mathematical modeling and abstraction, the data are classified as a parameterized model library. In the step, pipelines and pipeline connecting pieces with different types and common points in the complex ship pipeline system are respectively arranged, and relevant parameters are abstractly obtained based on the structure and the actual physical process. A class of components, not a specific physical object, is characterized by a parameterized simulation model. This step is the basis for parameterization, building an overall parameterization framework.
And establishing a physical property parameter form of the working medium of the ship pipeline system to form a working medium physical property parameter library of the ship pipeline system so as to select the required working medium and physical properties aiming at the ship pipeline system needing modeling simulation. Specifically, the working medium of the ship pipeline system comprises water, oil and air, wherein the water has two phase states of a vapor phase and a liquid phase in physical property parameters of the working medium, and the oil comprises fuel oil and lubricating oil. Aiming at some pipelines and pipeline connecting pieces, various working media are mixed, and physical properties of the mixed working media are set on the basis of the working media according to the proportion of different working media. And respectively selecting required working media and physical properties aiming at different complex ship pipeline systems. The physical property parameter form of the working medium in the ship pipeline system is established through the step, and the physical property parameter form of the working medium comprises the physical property parameter of the working medium.
2) Connecting based on the graphical module formed in the step 1) according to the connection relation of pipeline components in the actual ship pipeline system, constructing a topological relation diagram, and forming a system simulation model of the ship pipeline system; and establishing a parameter form of the connection relationship between the connecting components, wherein the parameter form of the connection relationship comprises a connection relationship parameter between the pipeline components and a transfer relationship parameter between the pipeline components.
Specifically, the topological relation graph comprises connections between pipelines, and pipeline connectors are represented in the form of connection nodes.
As shown in fig. 2, a topological relation diagram is constructed based on the three-dimensional space coordinates of the ship pipeline system.
3) Aiming at the topological relation diagram of the ship pipeline system formed in the step 2), establishing an input parameter form of a system simulation model, wherein the input parameter form comprises a structure parameter and an initial parameter so as to carry out parameterization setting on the ship pipeline system.
And (3) parameterizing each pipeline and pipeline connecting piece respectively according to the formed topological relation graph of the ship pipeline system, wherein the structural parameters of the ship pipeline system comprise length, diameter, wall thickness, roughness and three-dimensional space coordinates (starting point coordinates and end point coordinates). The structural parameters of the pipeline connecting piece comprise diameter, wall thickness, roughness and three-dimensional space coordinates (starting point coordinates and end point coordinates). Initial parameters in the vessel pipe system include initial flow, initial pressure, required inputs. The connecting node is used for checking whether the pipeline to be connected is consistent with the initial point coordinate of the pipeline. The input parameter form of the system simulation model is established through the step, and the input parameter form comprises structural parameters and initial parameters.
4) Setting boundary parameters of the system simulation model in the step 2) according to the attributes of the ship pipeline system, wherein the boundary parameters comprise a flow boundary and a pressure boundary, the pressure boundary is used for transmitting the pressure parameters outwards, and the flow boundary is used for transmitting the flow parameters outwards;
specifically, the boundaries of the ship pipeline system are divided into two categories, namely a flow boundary and a pressure boundary, the complex ship pipeline system is connected with the outside through the boundaries, required boundaries are respectively set according to the attributes of the simulation model, the pressure boundary is used for transmitting pressure parameters outwards, and the flow boundary is used for transmitting flow parameters outwards. The internal boundary, namely the connecting node, is used for transmitting parameters required by internal calculation of the complex ship pipeline system, mainly pressure and flow before and after the connecting point. The parametric form of the boundary through this step includes boundary parameters.
5) And constructing a system simulation model, carrying out dynamic characteristic simulation calculation on the ship pipeline system, and establishing a simulation output parameter form, wherein the simulation output parameter form comprises output parameters changing along with time.
Specifically, the simulation calculation mainly obtains the dynamic response condition of the parameters of the pipeline and the pipeline connecting piece which need to be observed along with the change of time, and therefore the dynamic response condition is used as the output.
In this embodiment, the method for modeling and simulating a ship pipeline system further includes a step of parameterization extension and modification, and before the step 5), the model base and the parameters are extended and modified according to the contents in the steps 1) to 4) according to the actual conditions of the ship pipeline system. The modeling simulation aiming at the complex ship pipeline system is represented in a parameter mode, some new ship pipeline system components can follow the steps, related components are added into a model base in a parameter mode, and new working media can also follow the steps and be added into a new working medium physical property parameter base.
In summary, in the modeling simulation calculation process of the ship pipeline system, the parameterized modeling simulation method is adopted for one-dimensional dynamic characteristic simulation calculation, and for the requirements of different stages of demonstration, design, construction, debugging and the like of the ship pipeline system on the dynamic operating characteristics of the complex ship pipeline system, the faster one-dimensional fluid dynamic characteristic modeling is realized in the full-process and full-system parameterized form, so that a fast, convenient and effective method is provided for the fast simulation of the dynamic characteristics of the complex pipeline fluid system of the ship power device in the actual engineering.
According to the method, a ship pipeline system simulation model is quickly established by a parameterization method, a model library and a working medium physical property parameter library are established, a graphical module in the model library can be selected according to an actual ship pipeline system to form a topological relation diagram, then the ship pipeline system is parameterized and boundary parameters are established, then simulation calculation is performed, quick simulation of a specific object complex ship pipeline system is achieved, different models in the model library and corresponding working medium parameters in the working medium physical property parameter library can be selected for different complex ship pipeline systems, the universality of the ship pipeline system modeling simulation method is enhanced, and the method has good and wide applicability.
In a second aspect, a computer storage medium is further provided, which is characterized by storing a computer program, and when the program is executed by a processor, the computer program implements the ship pipeline system modeling simulation method described in the embodiment of the first aspect. Preferably, the storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk.
In a third aspect, a computer device is further provided, which includes a memory and a processor, where the memory stores a computer program, and the program is executed by the processor to implement the ship pipeline system modeling simulation method in the embodiment of the first aspect.
The memory includes: various media that can store program codes, such as ROM, RAM, magnetic disk, U-disk, memory card, or optical disk. A processor is coupled to the memory for executing the computer programs stored by the memory.
Preferably, the Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; the Integrated Circuit may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A ship pipeline system modeling simulation method is characterized by comprising the following steps:
1) Establishing a ship pipeline system parameterized model library: the pipeline assembly in the ship pipeline system comprises a pipeline and a pipeline connecting piece, and a universal pipeline assembly simulation model library is established and used as the basis of modeling simulation; abstracting each type of pipeline component in a pipeline component simulation model library according to one-dimensional flow characteristics, performing mathematical modeling based on the physical process of actual one-dimensional flow, obtaining a parameterized model of each pipeline component through mathematical modeling and abstraction, forming the parameterized model library of each pipeline component, and forming each pipeline component into a graphical module;
establishing a physical property parameter form of a working medium of the ship pipeline system to form a working medium physical property parameter library of the ship pipeline system so as to select the required working medium and physical properties aiming at the ship pipeline system needing modeling simulation;
2) Connecting based on the graphical module formed in the step 1) according to the connection relation of pipeline components in the actual ship pipeline system, constructing a topological relation diagram, and forming a system simulation model of the ship pipeline system; establishing a parameter form of a connection relation between the connecting components, wherein the parameter form of the connection relation comprises a connection relation parameter between the pipeline components and a transfer relation parameter between the pipeline components;
3) Aiming at the topological relation graph of the ship pipeline system formed in the step 2), establishing an input parameter form of a system simulation model, wherein the input parameter form comprises a structure parameter and an initial parameter so as to carry out parameterization setting on each pipeline component;
4) Setting boundary parameters of the system simulation model in the step 2) according to the attributes of the ship pipeline system, wherein the boundary parameters comprise a flow boundary and a pressure boundary, the pressure boundary is used for transmitting the pressure parameters outwards, and the flow boundary is used for transmitting the flow parameters outwards;
5) And constructing a system simulation model, carrying out dynamic characteristic simulation calculation on the ship pipeline system, and establishing a simulation output parameter form, wherein the simulation output parameter form comprises output parameters changing along with time.
2. The ship pipeline system modeling and simulation method according to claim 1, wherein in step 1), the working medium of the ship pipeline system includes water, oil and air, and in the physical property parameters of the working medium, the water has two phase states of vapor phase and liquid phase, and the oil includes fuel oil and lubricating oil.
3. The ship pipeline system modeling and simulation method according to claim 1, wherein in step 2), the topological relation graph comprises connections between pipelines, pipeline connectors are represented in the form of connection nodes, and the connection nodes are used for checking whether the pipelines to be connected are consistent with the coordinates of the starting points of the pipelines.
4. The ship pipeline system modeling and simulation method according to claim 1, wherein in step 2), the topological relation graph is constructed based on three-dimensional space coordinates of the ship pipeline system.
5. The ship pipeline system modeling and simulation method of claim 1, wherein in step 3), the structural parameters comprise diameter, wall thickness, roughness and three-dimensional space coordinates, and the initial parameters comprise initial flow and initial pressure.
6. The ship pipeline system modeling and simulation method of claim 1, wherein the boundary parameters in step 4) further include internal boundaries, the internal boundaries include connection nodes between pipelines, and the internal boundaries are used for transmitting parameters required by internal calculation of the ship pipeline system.
7. The ship pipeline system modeling and simulation method according to claim 1, further comprising a step of parameterization extension modification, wherein the model base and parameters are extended and modified according to the actual conditions of the ship pipeline system and the contents in the steps 1) to 4).
8. A computer storage medium, characterized in that it stores a computer program which, when executed by a processor, implements the ship pipe system modeling simulation method of any one of claims 1 to 7.
9. A computer device, comprising:
a memory storing a computer program which, when executed by the processor, implements the ship pipe system modeling simulation method of any one of 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117216878A (en) * | 2023-09-27 | 2023-12-12 | 中国船舶集团有限公司第七一九研究所 | Ship power system-oriented rapid modeling method and device based on lumped parameter method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117216878A (en) * | 2023-09-27 | 2023-12-12 | 中国船舶集团有限公司第七一九研究所 | Ship power system-oriented rapid modeling method and device based on lumped parameter method |
| CN117216878B (en) * | 2023-09-27 | 2024-02-13 | 中国船舶集团有限公司第七一九研究所 | Ship power system-oriented rapid modeling method and device based on lumped parameter method |
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