CN108844712B - Wind load numerical model verification method, device and system and terminal - Google Patents
Wind load numerical model verification method, device and system and terminal Download PDFInfo
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- CN108844712B CN108844712B CN201810592391.9A CN201810592391A CN108844712B CN 108844712 B CN108844712 B CN 108844712B CN 201810592391 A CN201810592391 A CN 201810592391A CN 108844712 B CN108844712 B CN 108844712B
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- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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Abstract
The invention provides a method, a device, a system and a terminal for verifying a wind load numerical model, wherein the method is applied to the terminal and comprises the following steps: sending a rotation instruction to the rotating mechanism; generating a rotation stopping instruction according to the received measuring distance and the target attack angle sent by the laser range finder and the corresponding relation between the target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism; sending a wind speed control instruction generated according to the target wind speed to a wind power generation mechanism; substituting the target attack angle, the target wind speed and the environmental parameters into the wind load numerical model, and calculating to obtain a normal force calculation value; the normal force calculated value is verified by utilizing the normal force measured value sent by the strain type force transducer, a verification result is obtained, the technical problem that whether the approximate solution can represent the real wind load condition on the building or not can not be known in the prior art is solved, and the technical effect that whether the approximate solution can represent the real wind load condition on the building or not can be known is achieved.
Description
Technical Field
The invention relates to the technical field of model verification, in particular to a wind load numerical model verification method, device, system and terminal.
Background
Wind pressure acting on a building is called wind load (wind load), and wind load refers to pressure generated by air flow on an engineering structure.
In practical applications, the wind load numerical simulation technique can be used to measure the wind load, but the wind load numerical simulation technique calculates an approximate solution of the wind load numerical model. This approximate solution may be different from the true wind load, i.e. the approximate solution cannot be determined to be accurate and cannot know whether it can represent the true wind load on the building.
Disclosure of Invention
In view of the above, the present invention provides a method, an apparatus, a system and a terminal for verifying a wind load numerical model, so as to solve the technical problem in the prior art that it is not known whether an approximate solution can represent a real wind load situation on a building.
In a first aspect, an embodiment of the present invention provides a wind load numerical model verification method, where the method is applied to a terminal, the terminal is respectively in communication with a rotation mechanism, a strain-type force transducer, a wind generating mechanism and a laser range finder, the wind generating mechanism is disposed in a power section of a wind tunnel, a bottom end of a solar panel is fixed to a deformation measurement end of the strain-type force transducer, a housing of the strain-type force transducer is fixed to a rotation shaft of the rotation mechanism, and the method includes:
sending a rotation instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate;
generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, a preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism;
sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so that the wind power generation mechanism blows out wind with the target wind speed;
substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculated value;
and verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
With reference to the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, where the generating a rotation stop instruction according to the received measured distance sent by the laser range finder, the preset target attack angle, and a corresponding relationship between the preset target attack angle and the measured distance includes:
determining a measurement distance corresponding to the target attack angle as a target measurement distance in the corresponding relation between the target attack angle and the measurement distance;
and if the target measuring distance is equal to the measuring distance, generating the rotation stopping instruction.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the substituting the target attack angle, the target wind speed, and a preset environmental parameter into a preset wind load numerical model to obtain a normal force calculation value through calculation includes:
carrying out geometric model modeling according to the environment parameters to obtain a calculation domain;
performing spatial meshing on the calculation domain to obtain a meshing calculation domain;
judging whether the grid division calculation domain passes the grid independence test;
and if the grid division calculation domain passes the grid independence test, substituting the target attack angle, the target wind speed and the grid division calculation domain into the wind load numerical model, and calculating to obtain the normal force calculation value.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, where the verifying the normal force calculated value by using the received normal force measured value sent by the strain-type load cell to obtain a verification result includes:
subtracting a preset standard error of the strain type force transducer from the normal force measurement value, and calculating to obtain a normal force measurement correction value;
subtracting the normal force calculation value from the normal force measurement correction value to obtain a normal force difference value, and dividing the normal force difference value by the normal force measurement correction value to obtain a calculation measurement deviation;
if the calculated measurement deviation is smaller than a preset deviation threshold value, determining that the wind load numerical model is accurate;
if the calculated measured deviation is greater than or equal to the deviation threshold, determining that the wind load numerical model is inaccurate.
In a second aspect, an embodiment of the present invention further provides a wind load numerical model verification apparatus, including: the device comprises a first sending module, a generating module, a second sending module, a calculating module and a verifying module;
the first sending module is used for sending a rotating instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate;
the generating module is used for generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, the preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism;
the second sending module is used for sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so as to enable the wind power generation mechanism to blow out wind with the target wind speed;
the calculation module is used for substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model to calculate to obtain a normal force calculation value;
and the verification module is used for verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
In a third aspect, an embodiment of the present invention further provides a wind load numerical model verification system, including: a wind tunnel, a rotation mechanism, a strain gauge, a wind generating mechanism, a laser rangefinder and a terminal applying the method according to any of the first aspect.
With reference to the third aspect, embodiments of the present disclosure provide a first possible implementation manner of the third aspect, wherein the strain gauge load cell is a five-component strain gauge load cell.
With reference to the third aspect, an embodiment of the present invention provides a second possible implementation manner of the third aspect, where the laser range finder is a cloud service laser range finder.
In a fourth aspect, an embodiment of the present invention further provides a terminal, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the method according to any one of the first aspect when executing the computer program.
In a fifth aspect, the present invention also provides a computer-readable medium having non-volatile program code executable by a processor, where the program code causes the processor to execute the method according to any one of the first aspect.
The embodiment of the invention has the following beneficial effects: the method for verifying the wind load numerical model is applied to a terminal, the terminal is respectively communicated with a rotating mechanism, a strain type force measuring sensor, a wind power generating mechanism and a laser range finder, the wind power generating mechanism is arranged in a power section of a wind tunnel, the bottom end of a solar panel is fixed with the deformation measuring end of the strain type force measuring sensor, a shell of the strain type force measuring sensor is fixed with a rotating shaft of the rotating mechanism, and the method comprises the following steps: sending a rotation instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate; generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, a preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism; sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so that the wind power generation mechanism blows out wind with the target wind speed; substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculated value; and verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
Therefore, when a worker wants to know whether an approximate solution output by the wind load numerical model can represent a real wind load condition on a building, the terminal sends a rotation instruction to the rotating mechanism, generates a rotation stopping instruction according to a received measuring distance sent by the laser range finder, a preset target attack angle and a corresponding relation between the preset target attack angle and the measuring distance, and sends the rotation stopping instruction to the rotating mechanism; sending a wind speed control command generated according to a preset target wind speed to the wind power generation mechanism, substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculation value; the received normal force measurement value sent by the strain type force transducer is used for verifying the normal force calculation value to obtain a verification result, a worker can determine whether the approximate solution output by the wind load numerical model is accurate by using the verification result, and then knows whether the approximate solution can represent the real wind load condition on the building, so that the problem that whether the approximate solution can represent the real wind load condition on the building or not can not be known due to the fact that whether the approximate solution is accurate or not can not be determined is avoided, therefore, the technical problem that whether the approximate solution can represent the real wind load condition on the building or not can not be known in the prior art is solved, and the technical effect that whether the approximate solution can represent the real wind load condition on the building or not can be known is achieved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a wind tunnel according to an embodiment of the present invention;
fig. 2 is a flowchart of a wind load numerical model verification method according to an embodiment of the present invention;
FIG. 3 is a flowchart of step S104 in FIG. 2;
fig. 4 is a schematic structural diagram of a wind load numerical model verification system according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
At present, wind pressure acting on a building is called wind load (wind load), and wind load refers to pressure generated by air flow on an engineering structure.
In practical applications, the wind load numerical simulation technique can be used to measure the wind load, but the wind load numerical simulation technique calculates an approximate solution of the wind load numerical model. Based on the method, the device, the system and the terminal for verifying the wind load numerical model, provided by the embodiment of the invention, can relieve the technical problem that whether the approximate solution can represent the real wind load condition on the building or not in the prior art, and achieve the technical effect that whether the approximate solution can represent the real wind load condition on the building or not.
In order to understand the embodiment, firstly, a method for verifying a wind load numerical model disclosed by the embodiment of the invention is described in detail, the method is applied to a terminal, the terminal is respectively communicated with a rotating mechanism, a strain type force measuring sensor, a wind power generating mechanism and a laser range finder, the wind power generating mechanism is arranged in a power section of a wind tunnel, the bottom end of a solar panel is fixed with a deformation measuring end of the strain type force measuring sensor, and a shell of the strain type force measuring sensor is fixed with a rotating shaft of the rotating mechanism.
Illustratively, the wind load numerical model may be an SST k- ω turbulence model.
Illustratively, the wind tunnel may be a direct current wind tunnel, and as shown in fig. 1, the wind tunnel may sequentially include: the device comprises an air inlet section 11, a power section 12, a stabilizing section 13, a contraction section 14, a test section 15 and a diffusion section 16. The test section 15 may have cross-sectional dimensions of 0.5 m x 0.5 m and a length of 2 m, and the side walls of the test section 15 may be transparent. The maximum wind speed of the wind tunnel may be 40 m/s, and the minimum steady wind speed may be 2 m/s. The turbulence of the wind tunnel can be lower than 0.5%, and the velocity uniformity region can reach more than 85%.
Illustratively, the strain gauge load cell is a five-component strain gauge load cell, and the laser range finder is a cloud service laser range finder.
Exemplarily, solar panel can be perpendicular to the interior bottom surface of test section 15, solar panel's bottom with strain gauge load cell's deformation measurement end is fixed, strain gauge load cell's casing with rotary mechanism's axis of rotation is fixed.
For example, the deformation measuring end of the strain-type load cell may be fixedly connected to the middle point of the lower bottom edge of the solar panel through a screw. The screw is perpendicular to the inner bottom surface of the test section. The drop foot is located at the center of the inner bottom surface of the test section.
For example, the length of the solar panel in the vertical direction may be 0.25 m, and the distance between the lower bottom edge of the solar panel and the inner bottom surface of the test section 15 may be 0.05 m.
As shown in fig. 2, the wind load numerical model verification method may include the following steps.
Step S101, a rotation instruction is sent to the rotating mechanism, so that the rotating shaft of the rotating mechanism drives the solar panel to rotate.
Illustratively, the solar panel may have a thickness of 35 to 40 mm.
And step S102, generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, the preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism.
Illustratively, the target angle of attack may range from [ -19 °,19 ° ].
For example, the generating of the rotation stop command according to the received measured distance, the preset target attack angle and the corresponding relationship between the preset target attack angle and the measured distance sent by the laser range finder may include the following steps.
And determining the measurement distance corresponding to the target attack angle as a target measurement distance in the corresponding relation between the target attack angle and the measurement distance.
For example, the correspondence between the target angle of attack and the measured distance may be as shown in table 1.
TABLE 1
| Target angle of attack | Measuring distance |
| Angle A1 | Distance B1 |
| Angle A2 | Distance B2 |
| Angle A3 | Distance B3 |
For example, the laser distance meter may be disposed at a side of the test section 15. As shown in Table 1, when the angle of the solar panel is A1When the distance is measured, the distance sent by the laser range finder is B1. When the angle of the solar panel is A2When the distance is measured, the distance sent by the laser range finder is B2. When the angle of the solar panel is A3When the distance is measured, the distance sent by the laser range finder is B3。
And if the target measuring distance is equal to the measuring distance, generating the rotation stopping instruction.
Illustratively, when the worker determines that the target angle of attack is A2Then, according to Table 1, the angle of attack A with the target can be determined2Corresponding measured distance B2The distance is measured for the target. In the process that the solar panel rotates along with the rotating mechanism, the laser range finder sends the measured distance acquired in real time to the terminal, and if the measured distance and the target measured distance B are obtained2And if the two signals are equal, generating the rotation stopping instruction.
Step S103, sending a wind speed control command generated according to a preset target wind speed to the wind power generation mechanism so that the wind power generation mechanism blows out wind with the target wind speed.
Illustratively, the target wind speed is also predetermined by the staff. The target wind speed may be 20 m/s, 25 m/s, or 30 m/s.
And step S104, substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculation value.
Illustratively, as shown in fig. 3, the step S104 may include the following steps.
And step S201, carrying out geometric model modeling according to the environment parameters to obtain a calculation domain.
Step S202, carrying out space grid division on the calculation domain to obtain a grid division calculation domain.
Step S203, judging whether the grid division calculation domain passes the grid independence test.
And step S204, if the gridding partition calculation domain passes the gridding independence test, substituting the target attack angle, the target wind speed and the gridding partition calculation domain into the wind load numerical model, and calculating to obtain the normal force calculation value.
Illustratively, the wind load numerical model may be an SST k- ω turbulence model.
And S105, verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
Illustratively, step S105 may include the following steps.
And subtracting a preset standard error of the strain type force transducer from the normal force measurement value, and calculating to obtain a normal force measurement correction value.
For example, when the normal force measurement value is 10.5N and the standard error is 0.6N, the normal force measurement correction value may be calculated to be 9.9N.
And subtracting the normal force calculation value from the normal force measurement correction value to obtain a normal force difference value, and dividing the normal force difference value by the normal force measurement correction value to calculate and obtain a calculation measurement deviation.
For example, when the normal force calculation value is 9.5N, the normal force difference may be calculated to be 0.4N. Further, the calculated measurement deviation was calculated to be 4.0% by dividing 0.4N by 9.9N.
And if the calculated and measured deviation is smaller than a preset deviation threshold value, determining that the wind load numerical model is accurate.
For example, the deviation threshold may be set to 6.0%, so when the measured deviation is 4.0%, it may be determined that the wind load numerical model is accurate. I.e. the approximate solution can represent the situation of the real wind load on the building.
If the calculated measured deviation is greater than or equal to the deviation threshold, determining that the wind load numerical model is inaccurate.
For example, the deviation threshold may be set to 6.0%, so when the measured deviation is 8.0%, it may be determined that the wind load numerical model is inaccurate. I.e. the situation where the approximate solution cannot represent the true wind load on the building.
In the embodiment of the present invention, the method for verifying the wind load numerical model provided in the embodiment of the present invention is applied to a terminal, the terminal is respectively in communication with a rotating mechanism, a strain-type force-measuring sensor, a wind-generating mechanism and a laser range finder, the wind-generating mechanism is disposed in a power section of a wind tunnel, the bottom end of a solar panel is fixed to a deformation measuring end of the strain-type force-measuring sensor, a housing of the strain-type force-measuring sensor is fixed to a rotating shaft of the rotating mechanism, and the method includes: sending a rotation instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate; generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, a preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism; sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so that the wind power generation mechanism blows out wind with the target wind speed; substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculated value; and verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
Therefore, when a worker wants to know whether an approximate solution output by the wind load numerical model can represent a real wind load condition on a building, the terminal sends a rotation instruction to the rotating mechanism, generates a rotation stopping instruction according to a received measuring distance sent by the laser range finder, a preset target attack angle and a corresponding relation between the preset target attack angle and the measuring distance, and sends the rotation stopping instruction to the rotating mechanism; sending a wind speed control command generated according to a preset target wind speed to the wind power generation mechanism, substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculation value; the received normal force measurement value sent by the strain type force transducer is used for verifying the normal force calculation value to obtain a verification result, a worker can determine whether the approximate solution output by the wind load numerical model is accurate by using the verification result, and then knows whether the approximate solution can represent the real wind load condition on the building, so that the problem that whether the approximate solution can represent the real wind load condition on the building or not can not be known due to the fact that whether the approximate solution is accurate or not can not be determined is avoided, therefore, the technical problem that whether the approximate solution can represent the real wind load condition on the building or not can not be known in the prior art is solved, and the technical effect that whether the approximate solution can represent the real wind load condition on the building or not can be known is achieved.
In another embodiment of the present invention, a wind load numerical model verification apparatus disclosed in the embodiments of the present invention is described in detail, including: the device comprises a first sending module, a generating module, a second sending module, a calculating module and a verifying module;
the first sending module is used for sending a rotating instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate;
the generating module is used for generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, the preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism;
the second sending module is used for sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so as to enable the wind power generation mechanism to blow out wind with the target wind speed;
the calculation module is used for substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model to calculate to obtain a normal force calculation value;
and the verification module is used for verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
In another embodiment of the present invention, a wind load numerical model verification system disclosed in the embodiment of the present invention is described in detail, including: a wind tunnel, a rotation mechanism, a strain gauge, a wind generating mechanism, a laser rangefinder and a terminal applying the method according to any of the above embodiments.
Illustratively, as shown in fig. 4, the rotation mechanism 24, the strain gauge load cell 25, the wind generating mechanism 22, and the laser range finder 23 are each in communication with the terminal 21.
For example, the strain gauge load cell 25 may be a five-component strain gauge load cell.
Illustratively, the laser range finder 23 may be a cloud service laser range finder.
In another embodiment of the present invention, a terminal disclosed in the embodiments of the present invention is described in detail, and the terminal includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method according to any one of the above embodiments when executing the computer program.
In a further embodiment of the present invention, a computer-readable medium having a non-volatile program code executable by a processor and causing the processor to perform any one of the methods of the above embodiments is disclosed.
Unless specifically stated otherwise, the relative steps, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of the present invention.
The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, in the description of the embodiments of the present invention, 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The computer program product for performing the wind load numerical model verification method provided in the embodiment of the present invention includes a computer-readable storage medium storing a nonvolatile program code executable by a processor, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment, and will not be described herein again.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a wind load numerical model verification method, its characterized in that, the method is applied to the terminal, the terminal respectively with rotary mechanism, strain gauge load cell, wind-force generation mechanism and laser range finder communication, wind-force generation mechanism sets up in the power section of wind-tunnel, solar panel sets up in the test section of wind-tunnel, the bottom surface in the test section of perpendicular to, strain gauge load cell's deformation measuring terminal with solar panel's bottom mounting, strain gauge load cell's casing with rotary mechanism's axis of rotation is fixed, the method includes:
sending a rotation instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate;
generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, a preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism;
sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so that the wind power generation mechanism blows out wind with the target wind speed;
substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model, and calculating to obtain a normal force calculated value;
and verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
2. The method for verifying the wind load numerical model according to claim 1, wherein the generating of the rotation stop instruction according to the received corresponding relationship among the measured distance, the preset target attack angle, and the preset target attack angle and the measured distance sent by the laser range finder comprises:
determining a measurement distance corresponding to the target attack angle as a target measurement distance in the corresponding relation between the target attack angle and the measurement distance;
and if the target measuring distance is equal to the measuring distance, generating the rotation stopping instruction.
3. The wind load numerical model verification method according to claim 1, wherein the calculating a normal force calculation value by substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model comprises:
carrying out geometric model modeling according to the environment parameters to obtain a calculation domain;
performing spatial meshing on the calculation domain to obtain a meshing calculation domain;
judging whether the grid division calculation domain passes the grid independence test;
and if the grid division calculation domain passes the grid independence test, substituting the target attack angle, the target wind speed and the grid division calculation domain into the wind load numerical model, and calculating to obtain the normal force calculation value.
4. The method for verifying the wind load numerical model according to claim 1, wherein the verifying the normal force calculation value by using the received normal force measurement value sent by the strain type load cell to obtain a verification result comprises:
subtracting a preset standard error of the strain type force transducer from the normal force measurement value, and calculating to obtain a normal force measurement correction value;
subtracting the normal force calculation value from the normal force measurement correction value to obtain a normal force difference value, and dividing the normal force difference value by the normal force measurement correction value to obtain a calculation measurement deviation;
if the calculated measurement deviation is smaller than a preset deviation threshold value, determining that the wind load numerical model is accurate;
if the calculated measured deviation is greater than or equal to the deviation threshold, determining that the wind load numerical model is inaccurate.
5. A wind load numerical model verification device, comprising: the device comprises a first sending module, a generating module, a second sending module, a calculating module and a verifying module;
the first sending module is used for sending a rotating instruction to the rotating mechanism so that the rotating shaft of the rotating mechanism drives the solar panel to rotate;
the generating module is used for generating a rotation stopping instruction according to the received measuring distance sent by the laser range finder, the preset target attack angle and the corresponding relation between the preset target attack angle and the measuring distance, and sending the rotation stopping instruction to the rotating mechanism;
the second sending module is used for sending a wind speed control instruction generated according to a preset target wind speed to the wind power generation mechanism so as to enable the wind power generation mechanism to blow out wind with the target wind speed;
the calculation module is used for substituting the target attack angle, the target wind speed and a preset environmental parameter into a preset wind load numerical model to calculate to obtain a normal force calculation value;
and the verification module is used for verifying the normal force calculation value by using the received normal force measurement value sent by the strain type force transducer to obtain a verification result.
6. A wind load numerical model verification system, comprising: wind tunnel, rotation mechanism, strain gauge load cell, wind generating mechanism, laser rangefinder and terminal applying the method according to any of claims 1-4.
7. The wind load numerical model verification system of claim 6, wherein the strain gauge load cell is a five-component strain gauge load cell.
8. The wind load numerical model verification system of claim 6, wherein the laser rangefinder is a cloud service laser rangefinder.
9. A terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method of any of the preceding claims 1 to 4 when executing the computer program.
10. A computer-readable medium having non-volatile program code executable by a processor, wherein the program code causes the processor to perform the method of any of claims 1-4.
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