CN116124408A - Self-adaptive control small wind tunnel experiment system for front and rear wing models of racing car - Google Patents
Self-adaptive control small wind tunnel experiment system for front and rear wing models of racing car Download PDFInfo
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- CN116124408A CN116124408A CN202111346720.XA CN202111346720A CN116124408A CN 116124408 A CN116124408 A CN 116124408A CN 202111346720 A CN202111346720 A CN 202111346720A CN 116124408 A CN116124408 A CN 116124408A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
- G01M9/067—Measuring arrangements specially adapted for aerodynamic testing dealing with flow visualisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract
The invention discloses a small wind tunnel experiment self-adaptive control system for researching an automobile oil sludge model, which comprises a fan, a wind tunnel pipeline, an automobile oil sludge model, a pressure acquisition sheet, a trace-releasing particle release system, a force balance module, a boundary layer control module, a small PIV system, an acquisition module and a control module, wherein the wind tunnel pipeline is a direct-current wind tunnel, and is suitable for researching the relationship among the wind pressure intensity, vortex, wind resistance and downward pressure of the surface of the automobile oil sludge model; the wind speed can be adjusted through the fan, release of trace particles can be carried out through the PIV system, the automobile oil sludge model can be fixed through the force measuring balance module, the ground can be simulated through the boundary layer control module, the air flow data in the wind tunnel can be collected in real time through the acquisition module, the down force and wind resistance suffered by the automobile oil sludge model and the surface flow field image of the automobile oil sludge model can be used for carrying out subsequent data analysis, and the method can be used for aerodynamic research on the automobile oil sludge model.
Description
Technical Field
The invention relates to the field of models, in particular to a self-adaptive control small wind tunnel experimental system for front and rear wing model research of a racing car.
Background
The racing car model is an important reference model in the design and research of racing cars, and the manufacturing of the racing car model for analysis has the advantage of low production cost compared with the manufacturing of engineering sample cars, so that the racing car model is rapidly developed in the design and research of modern racing cars. Unlike engineering vehicles, which require large wind tunnels of high cost for aerodynamic research, racing models can be placed in small experimental wind tunnels for experimental analysis.
The wind tunnel experiment platform is mainly used for aerodynamic research, utilizes the principle of relative motion, generally fixes a researched model on a force measuring balance, simulates the running states of front and rear wing models of racing car under different speeds and curves by changing the angle of the force measuring balance and the air flow rate in a wind tunnel, and researches the parameters such as the down force generated by empty racing car sleeves and the pressure distribution of surrounding air under corresponding experimental instruments, thereby having great benefits for aerodynamic related research of racing car.
The existing large wind tunnel has high cost, most of the existing small wind tunnel experiment platforms are qualitative demonstration platforms, and a few small racing car models wind tunnels can only measure single data.
Aiming at the defects related to the background technology, the invention provides a small wind tunnel experiment self-adaptive control system for researching front and rear wing models of racing cars, which can provide continuous adjustable stable airflow, can self-adaptively adjust the airflow, simulate the wind speed of racing cars at different speeds and in curves, collect the surface pressure, wind resistance and downward pressure of the front and rear wing models of racing cars at different speeds, release trace particles, collect flow field diagrams on the surfaces of the front and rear wing models of racing cars, and is suitable for carrying out experimental research on the relationship between the surface pressure wind resistance and the downward pressure of the front and rear wing models of racing cars, and has low cost, wide application range and high degree of automation.
The invention adopts the following technical scheme for solving the technical problems;
a small wind tunnel experiment system for front and rear wing model research of racing car comprises a fan system, a wind tunnel pipe, front and rear wing models of racing car, a force balance module, a boundary layer control module, a small PIV trace particle release system, an acquisition module and a control module;
the wind tunnel body is a channel with openings at two ends, wherein an air outlet section, an experiment section, an air exhaust section and an acquisition module are arranged in the channel, the bottom of the experiment table is used for supporting, and a circuit of the experiment platform is arranged in the channel;
the fan system is arranged at the air outlet section and the air exhaust section, and the air outlet section is provided with an air outlet from upstream to downstream, a contraction section and a stabilization section. The exhaust section is provided with an exhaust fan and a diffusion section;
the cross section of the contraction section gradually contracts along the air flow direction, and the cross section of the diffusion section gradually expands along the air flow direction;
the air outlet section is a cube pipeline, and a first damping net and a second damping net are arranged in the cube pipeline and used for reducing turbulence of air flow;
the air outlet fan is arranged at the contraction section opening and used for generating stable air flow. The bottom of the small PIV tracer particle release system is provided with a small PIV tracer particle release system, the small PIV tracer particle release system is a closed box body with a single outlet, a tracer particle smoke tank can be placed in the small PIV tracer particle release system, a rear cover is connected with the bottom of the small PIV tracer particle release system through two hinges, and the outlet is arranged below the first fan to release tracer particles;
the tail part of the exhaust fan is provided with an air speed sensor for collecting the flow speed of the air flow in the wind tunnel;
the test section is internally provided with a force measuring balance module, a boundary layer control module and an acquisition module, the top of the test section is also provided with an operation cover, the left wall and the right arm are provided with four openings for placing laser samplers, and the force measuring balance module and the boundary control module form a model placing table;
the boundary layer control module is arranged on the force measuring balance module, and four concave circular arcs are arranged at the bottoms of the four tires of the racing car model;
the front and rear wing models of the racing car are required to be attached with pressure acquisition sheets at specific positions in a laboratory;
the acquisition module comprises a wind speed sensor, a force balance module, a pressure acquisition sheet, a data acquisition card and a laser sampling system;
the wind speed sensor is electrically connected with the control module and is used for measuring the air flow speed in the wind tunnel body;
the laser sampling system comprises four laser samplers, two laser samplers are arranged at openings at two sides of an experimental section and are electrically connected with the control module, and the laser sampling system is used for collecting front and rear wing model surfaces and tail trace particle flow field diagrams of the racing car.
The force measuring balance module is electrically connected with the control module, can adjust the running state of the rotation angle simulated racing car in a curve, and is used for measuring the down force and wind resistance of the front and rear wing models of the racing car.
The control module is electrically connected with the air outlet fan and the exhaust fan through an air speed control circuit and is used for storing various received signals, and controlling the rotating speeds of the air outlet fan and the exhaust fan to be used for adjusting the airflow velocity and turbulence in an experimental section according to the surface trace particle flow field diagram of the front and rear wing models of the front and rear wings of the racing car collected by the pressure collecting sheets on the surfaces of the front and rear wings of the racing car and the down force and wind resistance collected by the force measuring balance module.
As a further optimization scheme of the small wind tunnel experimental system for the front and rear wing model research of the racing car, the cross sections of the wind tunnel body at the air outlet section, the test section and the air exhaust section are rectangular.
As a further optimization scheme of the small wind tunnel experiment system for the front and rear wing model research of the racing car, the small PIV tracer particle release system is a closed box with a single outlet, the rear cover is connected with the bottom of the small PIV tracer particle release system through two hinges, and the outlet is arranged below the first fan.
As a further optimization scheme of the small wind tunnel experimental system for the front and rear wing model research of the Sailong, the air outlet section is made of stainless steel, and the experimental section and the air exhaust section are both made of transparent acrylic plates.
As a further optimization scheme of the small wind tunnel experimental system for the front and rear wing model research of the racing car, the operation cover is connected with the top of the test section through two hinges.
As a further optimization scheme of the small wind tunnel experimental system for the front and rear wing model research of the racing car, the force balance module is electrically connected with the control module and can adjust the rotation angle to simulate the running state of the racing car in a curve.
As a further optimization scheme of the small wind tunnel experimental system for the front and rear wing model research of the racing car, the invention provides a control module which adopts a computer.
As a further optimization scheme of the small wind tunnel experimental system for the front and rear wing model research of the Sago, the shrinkage curve of the shrinkage section adopts a hyperbolic curve, and the diffusion curve of the diffusion section adopts an S curve.
Compared with the prior art, the technical scheme adopted by the invention has the following technical effects;
1. the invention provides a small wind tunnel experimental system for researching front and rear wing models of a racing car, which can provide continuous adjustable stable air flow, can adaptively adjust the air flow, simulate the air speed of the front and rear wing models of the racing car at different speeds and different turning angles, can collect the surface pressure, wind resistance and downward pressure of the front and rear wing models of the racing car at different speeds, can release trace particles, and collect the trace particle flow field diagrams of the surfaces and the tail parts of the front and rear wing models of the racing car, thus being suitable for carrying out experimental research on the relationship among the surface pressure, the wind resistance and the downward pressure of the front and rear wing models of the racing car, and having low cost, wide application range and high degree of automation; the defects of high cost, complex operation, high experimental threshold, large required site, high maintenance cost and single measurement data of the traditional wind tunnel are overcome.
2. By means of the arrangement of a data acquisition system and a control system, the changes of the surface pressure, the surface and tail trace particle flow field diagram, the surface, the wind resistance and the down force of the front and rear wing models of the racing car are acquired by using a pressure acquisition sheet, a force measuring balance system, a laser sampling system and a wind speed sensor on the surfaces of the front and rear wing models of the racing car, and are displayed in real time by an intervention computer to serve as a standard for controlling the rotating speed of a fan; the data recorded by the computer provides parameters for the aerodynamic study of the automobile.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a cross-sectional view of an air outlet section and a small PIV system of the present invention;
FIG. 3 is a cross-sectional view of a test section of the present invention;
FIG. 4 is a schematic view of the exhaust section of the present invention;
fig. 5 is a functional block diagram of the present invention.
In the figure, a 1-control module, a 2-first wind speed control circuit, a 3-small PIV trace particle release system, a 4-air outlet machine, a 5-contraction section, a 6-stabilization section, a 7.1-first damping net, a 7-second damping net, an 8-laser sampling system, a 9-boundary layer control module, a 10-exhaust fan, an 11-wind speed sensor, a 12-experiment table bottom, a 13-force balance system, a 14-second wind speed control circuit, a 15-wind speed transmitter, a 16-image collector, a 17-signal amplifier and an 18-racing car model.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings
The present invention may be embodied in a variety of forms and should not be construed as limited to the embodiments set forth herein, but rather as providing those skilled in the art with a thorough and complete understanding of the present disclosure, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the components are exaggerated in scale for clarity.
The invention overcomes the defects of high cost, complex operation, high experimental threshold, large required site, high maintenance cost and single measurement data of the traditional wind tunnel, and provides a small wind tunnel experimental system for researching front and rear wing models of racing car, which can provide continuous adjustable stable air flow, adjust the air flow, change the angle of a force measuring balance and change the air flow rate in a wind tunnel to simulate the running state of the front and rear wing models of racing car under different speeds and curves, collect the surface pressure, wind resistance and lower pressure of the front and rear wing models of racing car under different speeds, release trace particles, collect the trace particle flow field diagrams of the surfaces and the tails of the front and rear wing models of racing car, and is suitable for carrying out experimental research on the relationship between the surface pressure, the wind resistance and the lower pressure of the front and rear wing models of racing car, and has wide application range and high degree of automation.
The system is an experimental platform designed for front and rear wing models of the racing car, the size of the model placement platform is set to be 0.6m0.55m, and the model placement platform can be used for front and rear wing models of the racing car with the length smaller than 0.5m, the width smaller than 0.5m, the height smaller than 0.35m and the weight smaller than 6 kg.
As shown in fig. 1, the invention comprises a fan system, a wind tunnel pipe, a front and rear wing model of a racing car, a small PIV trace particle release system, a force balance module, a boundary layer control module, an acquisition module and a control module;
the wind tunnel body is a channel with openings at two ends, wherein an air outlet section, an experiment section, an air exhaust section and an acquisition module are arranged, the lower part of the wind tunnel body is a bottom of an experiment table for supporting, and a circuit of the experiment table is arranged in the wind tunnel body;
the fan system is arranged at the air outlet section and the air exhaust section, and a small PIV trace particle release system, an air outlet fan, a contraction section and a stabilization section are arranged at the air outlet section from upstream to downstream. The exhaust section is provided with an exhaust fan and a diffusion section;
the cross section of the contraction section gradually contracts along the air flow direction, and the cross section of the diffusion section gradually expands along the air flow direction;
as shown in fig. 2, the cross section of the constriction section gradually constricts along the air flow direction, and the cross section of the diffusion section gradually expands along the air flow direction;
the air outlet section is a square pipeline, and a first damping net and a second damping net are arranged in the square pipeline and used for reducing the turbulence level of air flow;
the air outlet fan is arranged at the contraction section opening, and the bottom of the air outlet fan is provided with a small PIV trace particle release system for generating stable air flow and releasing trace particles;
as shown in fig. 4, the tail part of the exhaust fan is provided with an air speed sensor, the support column of the exhaust fan is arranged, and the upper end of the exhaust fan penetrates into the diffusion section from the through hole in the lower wall of the test section;
as shown in fig. 3, a force measuring balance module, a boundary layer control module and a laser sampling system are arranged in the test section, an operation cover is further arranged at the top of the test section, four openings are formed in the left wall and the right wall for placing laser samplers, the force measuring balance module and the boundary control module form a model placing table, the force measuring balance module passes through the bottom of the test section through a window, and the angle of the force measuring balance module can be adjusted through the control module;
the boundary layer control module is arranged on the force balance module, and four concave circular arcs are arranged at the bottoms of four tires of the front and rear wing models of the racing car;
the front and rear wing models of the racing car are required to be attached with pressure acquisition sheets at specific positions in a laboratory;
the acquisition module comprises a wind speed sensor, a force balance module, a pressure acquisition sheet, a data acquisition card and a laser sampling system;
the wind speed sensor is electrically connected with the control module and is used for measuring the air flow speed in the wind tunnel body;
the laser sampling system comprises four laser samplers, two laser samplers are arranged at openings at two sides of an experimental section and are electrically connected with the control module, and the laser sampling system is used for collecting front and rear wing model surfaces and tail trace particle flow field diagrams of the racing car.
The pressure acquisition sheet is attached to a specific part of the front wing model and the rear wing model of the racing car and is sent to the control module in a wireless signal mode.
The force measuring balance module is electrically connected with the control module and can adjust the angle, and the simulated racing car turning angle is used for measuring the down force and wind resistance of the front wing model and the rear wing model of the racing car.
The control module is electrically connected with the air outlet fan and the exhaust fan through an air speed control circuit and is used for storing various received signals, acquiring a trace particle flow field diagram on the front and rear wing model surfaces of the racing car according to a laser sampling system, acquiring the pressure on the front and rear wing model surfaces of the racing car, acquiring the down force and wind resistance of the racing car, controlling the rotating speeds of the air outlet fan and the exhaust fan, adjusting the airflow velocity and the turbulence in an experimental section and controlling the rotating angle of the force measuring balance.
The sections of the wind tunnel body at the air outlet section, the test section and the air exhaust section are all preferably rectangular, the air outlet section is made of stainless steel, and the test section and the air exhaust section are both made of transparent acrylic plates; the control module preferably employs a computer.
The operating cover is connected with the top of the test section through two hinges.
The shrinkage section is located the entrance of wind-tunnel, and the shrinkage curve that commonly uses has dimension Xin Si curve, hyperbolic, cubic curve, adopts the hyperbolic, and the entrance shrink is smooth and easy, does not have the appearance of contrary pressure gradient phenomenon, and the slope of export is tangent with stable section inner wall slope, and shrinkage section entry and export cross-section are square, and the shrinkage ratio is 9: and 1, improving the uniformity of air flow, reducing the turbulence level and adopting flange airtight connection with the stabilizing section.
The stabilizing section is positioned behind the contracting section, and the first damping net and the second damping net in the stabilizing section are used for enabling the air flow to be uniform before entering the test section, so that the turbulence degree is reduced, the flow field quality of the test section is improved, and trace particles uniformly enter the test section when the small PIV trace particle release system is started. The spacing between the second damping nets of the first damping net is 0.13m, and a 30-mesh wire sand net is generally adopted.
The test section is located after the stabilization section, for experiment and observation,
the diffusion section is positioned behind the test section, the diffusion angle of the diffusion section is 7 degrees, and the diffusion curve adopts an S curve, so that the kinetic energy of the air flow is changed into pressure energy, the wind speed of the test section is improved, the turbulence is reduced, and the flow field quality of the test section is improved.
The first fan of fan system is located before the shrink section, and the second fan is located after the diffusion section, and the second fan afterbody still is equipped with wind speed sensor, and fan system rotational speed is adjustable, guides the tracer particle, provides power.
The small PIV trace particle release system is arranged below the first fan, trace particles can adopt helium, dry ice, carbon dioxide and other pollution-free gases, the small PIV trace particle release system is a closed box body with a single outlet, a trace particle smoke tank can be placed in the small PIV trace particle release system, a rear cover is connected with the bottom of the small PIV trace particle release system through two hinges, an outlet is arranged below the first fan, PIV trace particles can pass through a shrinkage and stabilization section from the outlet after the smoke bomb is opened, uniformly enter a test section and are discharged from a diffusion section.
The fan in the fan system is started, the rotating speed of the fan is regulated through regulating the power of the motor, the wind speed is detected through a wind speed sensor at the tail of the second fan, the wind speed is regulated according to experimental requirements, the wind speed range is 2-18m/s, air flow and PIV tracer particles enter from the contraction section, enter the stabilization section through the adjustment of the contraction section, sequentially pass through the first damping net, after the second damping net, the turbulence of the air flow and the PIV tracer particles entering the stabilization section is reduced, then enter the experimental section, the transparent operating cover on the experimental section can be opened and put into the front wing model and the rear wing model of the racing car, the air flow and the PIV tracer particles flow relative to the front wing model and the rear wing model of the racing car, and then the air flow is discharged out of the wind tunnel body through the second fan through the diffusion section.
As shown in FIG. 5, in the small wind tunnel experimental system of the embodiment of the invention, the control system inputs data to the fan system through the first wind speed controller and the second wind speed controller, the fan system inputs wind energy to the test section, the governor is adjusted through the force measurement balance, model surface pressure acquired by the pressure collecting sheet in the test section is transmitted to the control module through wireless signals, the laser sampling system transmits the model surface and tail trace particle flow field diagram to the control module through the signal wire transmission image collector and then through the signal wire, the force measurement balance system transmits acquired down force and wind resistance to the signal wire transmission signal amplifier and then to the signal wire control module, the control module records the acquired data, wind speed in the wind tunnel acquired by the wind speed sensor is transmitted to the wind speed transmitter through the signal wire and then to the control module, the control module software processes the data in real time and displays the data on the data panel, and the input data is adjusted according to the experimental data.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
While the foregoing is directed to embodiments of the present invention, other and further details of the invention may be had by the present invention, it should be understood that the foregoing description is merely illustrative of the present invention and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the invention.
Claims (8)
1. The self-adaptive control small wind tunnel experiment system for the front and rear wing model research of the racing car is characterized by comprising a wind tunnel pipeline of a fan system, front and rear wing models of the racing car, a force measuring balance module, a boundary layer control module, a small PIV trace particle release system, an acquisition module and a control module;
the wind tunnel body is a channel with openings at two ends, wherein an air outlet section, an experiment section, an air exhaust section and an acquisition module are arranged in the channel, the bottom of the experiment table is used for supporting, and a circuit of the experiment platform is arranged in the channel;
the fan system is arranged at the air outlet section and the air exhaust section, and the air outlet section is provided with an air outlet from upstream to downstream, a contraction section and a stabilization section. The exhaust section is provided with an exhaust fan and a diffusion section;
the cross section of the contraction section gradually contracts along the air flow direction, and the cross section of the diffusion section gradually expands along the air flow direction;
the air outlet section is a cube pipeline, and a first damping net and a second damping net are arranged in the cube pipeline and used for reducing turbulence of air flow;
the air outlet fan is arranged at the contraction section opening and used for generating stable air flow. The bottom of the small PIV tracer particle release system is provided with a small PIV tracer particle release system, the small PIV tracer particle release system is a closed box body with a single outlet, a tracer particle smoke tank can be placed in the small PIV tracer particle release system, a rear cover is connected with the bottom of the small PIV tracer particle release system through two hinges, and the outlet is arranged below the first fan to release tracer particles;
the tail part of the exhaust fan is provided with an air speed sensor for collecting the flow speed of the air flow in the wind tunnel;
the test section is internally provided with a force measuring balance module, a boundary layer control module and an acquisition module, the top of the test section is also provided with an operation cover, the left wall and the right arm are provided with four openings for placing laser samplers, and the force measuring balance module and the boundary control module form a model placing table;
the boundary layer control module is arranged on the force balance module, and four concave circular arcs are arranged at the bottoms of four tires of the front and rear wing models of the racing car;
the front and rear wing models of the racing car are required to be attached with pressure acquisition sheets at specific positions in a laboratory;
the acquisition module comprises a wind speed sensor, a force balance module, a pressure acquisition sheet, a data acquisition card and a laser sampling system;
the wind speed sensor is electrically connected with the control module and is used for measuring the air flow speed in the wind tunnel body;
the laser sampling system comprises four laser samplers, two laser samplers are arranged at openings at two sides of an experimental section and are electrically connected with the control module, and the laser sampling system is used for collecting front and rear wing model surfaces and tail trace particle flow field diagrams of the racing car.
The force measuring balance module is electrically connected with the control module, can adjust the angle to simulate the turning angle of the racing car and is used for measuring the down force and wind resistance of the front wing model and the rear wing model of the racing car.
The control module is electrically connected with the air outlet fan and the exhaust fan through an air speed control circuit and is used for storing various received signals, collecting the trace particle flow field diagram on the front and rear wing model surfaces of the racing car according to the laser sampling system, collecting the surface pressure of the car body collected by the pressure collecting sheets on the front and rear wing model surfaces of the racing car and the down force and wind resistance collected by the force measuring balance module, controlling the rotating speeds of the air outlet fan and the exhaust fan, adjusting the airflow velocity and the turbulence degree in an experimental section and controlling the force measuring balance to rotate so as to simulate the turning angle of the racing car.
2. The small wind tunnel experimental system for the front and rear wing model research of the racing car according to claim, wherein the cross sections of the wind tunnel body at the air outlet section, the test section and the air exhaust section are all rectangular.
3. The small wind tunnel experiment system for front and rear wing model research of the racing car according to claim, wherein the small PIV tracer particle releasing system is a closed box with a single outlet, the rear cover is connected with the bottom of the small PIV tracer particle releasing system through two hinges, and the outlet is arranged below the first fan.
4. The small wind tunnel experimental system for the front and rear wing model research of the Sailong train according to claim, wherein the air outlet section is made of stainless steel, and the experimental section and the air exhaust section are both made of transparent acrylic plates.
5. The mini wind tunnel experiment system for front and rear wing model study of racing car according to claim, wherein the operating cover is connected to the top of the test section by two hinges.
6. The small wind tunnel experiment system for front and rear wing model research of racing car according to claim, characterized in that the force balance can rotate.
7. The small wind tunnel experimental system for the front and rear wing model research of the racing car according to claim, wherein the control module adopts a computer.
8. The small wind tunnel experimental system for the front and rear wing model research of the racing car according to claim, wherein the contraction curve of the contraction section adopts a hyperbolic curve, and the diffusion curve of the diffusion section adopts an S curve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111346720.XA CN116124408A (en) | 2021-11-15 | 2021-11-15 | Self-adaptive control small wind tunnel experiment system for front and rear wing models of racing car |
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| CN202111346720.XA CN116124408A (en) | 2021-11-15 | 2021-11-15 | Self-adaptive control small wind tunnel experiment system for front and rear wing models of racing car |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118347686A (en) * | 2024-06-18 | 2024-07-16 | 溧阳气动创新研究院有限公司 | Light-weight standard model for wind tunnel flow field calibration |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118347686A (en) * | 2024-06-18 | 2024-07-16 | 溧阳气动创新研究院有限公司 | Light-weight standard model for wind tunnel flow field calibration |
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