Wind tunnel experiment device and method

Abstract

The invention provides a wind tunnel experiment device and method, and relates to the technical field of wind power generation, and the wind tunnel experiment device comprises a tracing transition group section, a wind control group section, and a supporting transverse plate. The tracing transition group section comprises a tracing assembly and a transition assembly which are respectively used for generating tracer particles and converting the laminar flow of the future flow air field into turbulent flow; the wind control group section comprises a plurality of wind turbine components which are arranged in an array mode and can independently rotate, and the wind turbine components are used for adjusting the windward angle of the incoming flow wind field and constructing multiple types of incoming flow wind fields. The wind field state can be accurately controlled from laminar flow to turbulent flow, and the authenticity and repeatability of the experimental wind field are enhanced; the windward angles of the multiple wind turbine components are independently adjusted, and the diversity and flexibility of wind tunnel experiment scene simulation are improved; the device is simple in structure, high in expandability and convenient to operate.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a wind tunnel experimental device and method. Background Art

[0002] In recent years, the large-scale deployment of wind power, a key component of renewable energy, has been crucial for improving the clean energy mix. However, during wind farm operation, the wake effect of wind turbines significantly impacts overall power generation efficiency. Wind tunnel experiments are widely used to study wake characteristics, providing controlled environmental variables and repeatable testing conditions.

[0003] However, current wind tunnel experiments generally have problems such as complex operation, time-consuming working condition adjustment, and poor system scalability, which limit their application efficiency and adaptability in multi-scenario and multi-parameter coupled optimization research.

[0004] Therefore, there is an urgent need for a wind tunnel experimental device with a simple structure, easy operation and good scalability. Summary of the Invention

[0005] In view of the above problems, embodiments of the present application provide a wind tunnel experiment device and method to overcome or at least partially solve the above problems.

[0006] According to a first aspect of an embodiment of the present application, a wind tunnel experimental apparatus is provided, comprising: a tracer transition segment, a wind control segment, and a support cross plate, wherein the tracer transition segment and the wind control segment are both disposed on the support cross plate, with the tracer transition segment being located at an end of the support cross plate close to the wind tunnel exit, and the wind control segment being located at an end of the support cross plate away from the wind tunnel exit; The tracer transition group segment is provided with: a tracer component and a transition component, and the tracer component is connected to the transition component; The tracer component is used to generate tracer particles at the beginning of the wind tunnel experiment, so that the initial incoming wind field is mixed with the tracer particles to obtain a first incoming wind field; The transition component is used to convert the first incoming wind field from a laminar flow state to a turbulent flow state to obtain a second incoming wind field; The wind control group section is provided with: a wind turbine component, the wind turbine component is used to adjust the windward angle with the second incoming wind field; The wind turbine assembly includes: a plurality of wind turbine components arranged in an array, each wind turbine component can independently rotate in a direction parallel to the supporting horizontal plate to obtain a plurality of rotation angle combinations, so that the second incoming wind field forms different types of third incoming wind fields under the action of the wind turbine components with different rotation angle combinations.

[0007] Optionally, the wind control group section is further provided with: a tail plate assembly, the tail plate assembly being connected to the wind turbine assembly; The tail plate assembly includes a wake development plate, an angle adjuster and a tail wing plate; An end of the wake development plate away from the entrance of the wind tunnel is connected to an end of the tail wing plate close to the entrance of the wind tunnel; The angle adjuster is arranged between the wake development plate and the tail wing plate. Under the action of the angle adjuster, the tail wing plate rotates around the end of the wake development plate away from the entrance of the wind tunnel.

[0008] Optionally, the device further comprises: a laminar flow transition plate, and the tracer component comprises: a tracer particle generator, a tracer particle transport pipeline, and a tracer particle output interface; The laminar flow transition plate is provided at one end of the supporting horizontal plate close to the entrance of the wind tunnel, and the laminar flow transition plate extends out of the supporting horizontal plate from the end of the supporting horizontal plate close to the entrance of the wind tunnel in the direction of the entrance of the wind tunnel; The tracer particle generator is arranged on the outside of the wind tunnel, and the tracer particle output interface is arranged on the side of the laminar transition plate close to the entrance of the wind tunnel; the tracer particle generator is connected to the tracer particle output interface through the tracer particle transport pipeline, and the orthographic projection of the tracer particle output interface on the laminar transition plate does not overlap with the orthographic projection of the supporting cross plate on the laminar transition plate.

[0009] Optionally, the transition assembly comprises: a plurality of laminar transition filaments arranged at intervals along the inflow direction of the initial incoming wind field, the plurality of laminar transition filaments being arranged on a side of the laminar transition plate away from the entrance of the wind tunnel, and the orthographic projections of the plurality of laminar transition filaments on the laminar transition plate being located inside the orthographic projection of the supporting cross plate on the laminar transition plate; The plurality of laminar transition filaments are used to transform the first incoming wind field from a laminar state to a turbulent state.

[0010] Optionally, the side of the laminar flow transition plate away from the entrance of the wind tunnel is further provided with: a rough sandpaper belt, the rough sandpaper belt is arranged adjacent to the laminar flow transition wire and is located on the side close to the entrance of the wind tunnel; The sandpaper rough belt is used to transform the first incoming wind field from a laminar flow state to a turbulent flow state.

[0011] Optionally, the wind turbine assembly further comprises: a motor controller; The motor controller is arranged outside the wind tunnel, and the motor controller is connected to the plurality of wind turbine components via a communication line; The motor controller is used to control the wind turbine component to change the rotation angle in a direction parallel to the supporting transverse plate, so as to adjust the windward angle with respect to the second incoming wind field.

[0012] Optionally, the wind turbine component includes: a turntable, a wind turbine, a drive motor, and a turntable fixing base; the support horizontal plate is provided with a plurality of grooves, and the spacing between two of the grooves is the same; the turntable includes a first end surface and a second end surface arranged opposite to each other, the first end surface is connected to the support horizontal plate, and the second end surface is located on a side away from the support horizontal plate; The wind turbine is fixedly connected to the first end surface of the turntable, and the power end of the drive motor is connected to the second end surface of the turntable; The turntable is arranged in the groove of the supporting horizontal plate through the turntable fixing base and is rotatably connected to the supporting horizontal plate; The communication terminal of the driving motor is connected to the motor controller via the communication line.

[0013] Optionally, the wind control group segment is further provided with: a fixing plate; The fixing plate is arranged on the supporting horizontal plate, and a plurality of through holes are provided on the fixing plate. The interval distance between two of the through holes is the same. The through holes are arranged in a one-to-one correspondence with the grooves. The wind turbine passes through the through holes and is fixedly connected to the first end face of the turntable.

[0014] Optionally, the wind turbine comprises: a support rod and a windward mechanism; The support rod is vertically arranged relative to the support horizontal plate and the fixed plate, and the first end of the support rod is fixedly connected to the first end surface of the turntable; The windward mechanism is arranged at the second end of the support rod away from the support transverse plate and the fixed plate, and the windward mechanism can rotate at any angle along a direction parallel to the support transverse plate.

[0015] Optionally, the windward mechanism includes a plurality of rotatable blades and a blade fixing base; The blade fixing base is fixedly connected to the support rod, and the plurality of blades are rotatably connected to the blade fixing base; The plurality of blades are arranged on the windward side of the second incoming wind field and can rotate under the action of the second incoming wind field.

[0016] Optionally, the device further comprises: a guide plate; The guide plate is arranged at the entrance of the wind tunnel and is connected to a side of the tracer transition segment close to the entrance of the wind tunnel; The guide plate is an arc-shaped structure, and the height of the guide plate from the bottom wall of the wind tunnel gradually increases from the end close to the entrance of the wind tunnel to the end away from the entrance of the wind tunnel, and is flush with the tracer transition group segment at the connection; The guide plate is used to guide the initial incoming wind field so that the initial incoming wind field flows along the surface of the guide plate from the entrance of the wind tunnel to the tracer transition group section.

[0017] Optionally, the device further comprises: at least one transition plate; At least one transition plate is provided between the tracer transition group segment and the wind control group segment; At least one of the transition plates is used to enhance the turbulent state of the second incoming wind field.

[0018] In a second aspect of the embodiments of the present application, a method for applying the wind tunnel experimental apparatus described in the first aspect of the present application is provided, the method comprising: After the wind tunnel experiment begins, the tracer assembly of the tracer transition section is activated, and tracer particles are generated by the tracer assembly so that the tracer particles are mixed with the initial incoming wind field to obtain a first incoming wind field; After the first incoming wind field reaches the transition component of the tracer transition group section, the transition component converts the first incoming wind field from a laminar state to a turbulent state to obtain a second incoming wind field; After the second incoming wind field reaches the wind control group section, adjusting the rotation angles of the plurality of wind turbine components arranged in the array in a direction parallel to the supporting cross plate according to the first angle rotation strategy to obtain a first rotation angle combination of the wind turbine components, so that the second incoming wind field forms a first type of third incoming wind field under the action of the wind turbine components of the first rotation angle combination; After obtaining the third incoming wind field of the first type, according to the second angle rotation strategy, the rotation angles of the multiple wind turbine components arranged in the array are adjusted along the direction parallel to the supporting horizontal plate to obtain the second rotation angle combination of the wind turbine components, so that the third incoming wind field of the first type forms a third incoming wind field of the second type under the action of the wind turbine components of the second rotation angle combination.

[0019] Beneficial effects of this application: The present application provides a wind tunnel experiment device, which includes: a tracer transition group segment, a wind control group segment and a supporting cross plate, wherein the tracer transition group segment and the wind control group segment are both arranged on the supporting cross plate, and the tracer transition group segment is located at one end of the supporting cross plate close to the wind tunnel outlet, and the wind control group segment is located at one end of the supporting cross plate away from the wind tunnel outlet; the tracer transition group segment is provided with: a tracer component and a transition component, the tracer component is connected to the transition component; the tracer component is used to generate tracer particles at the beginning of the wind tunnel experiment, so that the initial incoming wind field is consistent with the tracer The particles are mixed to obtain a first incoming wind field; the transition component is used to convert the first incoming wind field from a laminar state to a turbulent state to obtain a second incoming wind field; the wind control group section is provided with: a wind turbine component, the wind turbine component is used to adjust the windward angle with the second incoming wind field; the wind turbine component includes: a plurality of wind turbine components arranged in an array, each wind turbine component can be independently rotated in a direction parallel to the supporting cross plate to obtain a variety of rotation angle combinations, so that the second incoming wind field forms different types of third incoming wind fields under the action of the wind turbine components with different rotation angle combinations.

[0020] The present application provides a wind tunnel experimental device, including a tracer transition segment, a wind control segment, and a supporting cross plate. The tracer transition segment includes a tracer component and a transition component, which are respectively used to generate tracer particles and convert the incoming wind field from laminar flow to turbulent flow; the wind control segment includes a plurality of wind turbine components arranged in an array and independently rotatable, which are used to adjust the windward angle of the incoming wind field and construct multiple types of incoming wind fields. By arranging the tracer component and the transition component in the tracer transition segment, the present application can achieve precise control and visualization of the wind field state from laminar flow to turbulent flow, thereby enhancing the authenticity and repeatability of the experimental wind field; by arranging multiple wind turbine components with adjustable angles, the diversity and flexibility of the wind tunnel experimental scene simulation are improved; in addition, the wind tunnel experimental device of the present application has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a schematic structural diagram of a wind tunnel experimental device provided in an embodiment of the present application; Figure 2 1 is a schematic structural diagram of a tracer transition assembly provided in an embodiment of the present application; Figure 3is a top view of a wind tunnel experimental device provided in an embodiment of the present application; Figure 4 This is a schematic structural diagram of a wind turbine assembly provided in an embodiment of the present application; Figure 5 This is a schematic flow chart of the method steps applied to a wind tunnel experimental device provided in an embodiment of the present application.

[0023] Explanation of Reference Numerals: 10, tracer transition group segment; 20, wind control group segment; 30, supporting cross plate; 40, wind tunnel; 50, laminar transition plate; 60, guide plate; 11, tracer assembly; 111, tracer particle generator; 112, tracer particle transport pipeline; 113, tracer particle output interface; 12, transition assembly; 121, laminar transition wire; 122, sandpaper roughening belt; 21, wind turbine assembly; 211, wind turbine component; 212. Motor controller; 213. Communication line; 22. Tail plate assembly; 221. Wake development plate; 222. Angle adjuster; 223. Tail wing; 2111. Turntable; 2112. Wind turbine; 2113. Drive motor; 2114. Turntable fixing base; 2115. Support rod; 2116. Windward mechanism; 2117. Blade; 2118. Blade fixing base; 23. Fixing plate; 231. Through hole. DETAILED DESCRIPTION

[0024] The exemplary embodiments of the present application will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present application. Although the accompanying drawings show exemplary embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0025] Based on the above problems, the first aspect of the embodiment of the present application provides a wind tunnel experimental device, such as Figure 1 The structure diagram of the wind tunnel experimental device shown in FIG. 1 is a schematic diagram of the structure of the wind tunnel experimental device, which includes: a tracer transition segment 10, a wind control segment 20, and a supporting cross plate 30. The tracer transition segment 10 and the wind control segment 20 are both arranged on the supporting cross plate 30, and the tracer transition segment 10 is located at the end of the supporting cross plate 30 close to the exit of the wind tunnel 40, and the wind control segment 20 is located at the end of the supporting cross plate 30 away from the exit of the wind tunnel 40. The tracer transition group segment 10 is provided with: a tracer component 11 and a transition component 12, wherein the tracer component 11 is connected to the transition component 12; The tracer assembly 11 is used to generate tracer particles at the beginning of the wind tunnel experiment, so that the initial incoming wind field is mixed with the tracer particles to obtain a first incoming wind field; The transition component 12 is used to convert the first incoming wind field from a laminar flow state to a turbulent flow state to obtain a second incoming wind field; The wind control section 20 is provided with: a wind turbine component 21, the wind turbine component 21 is used to adjust the windward angle with the second incoming wind field; The wind turbine assembly 21 includes: a plurality of wind turbine components 211 arranged in an array, each wind turbine component 211 can independently rotate in a direction parallel to the supporting horizontal plate 30 to obtain a plurality of rotation angle combinations, so that the second incoming wind field forms different types of third incoming wind fields under the action of the wind turbine components 211 with different rotation angle combinations.

[0026] This application provides a Figure 1 The wind tunnel experimental apparatus shown in FIG. 1 includes a tracer transition segment 10, a wind control segment 20, and a support plate 30. Both the tracer transition segment 10 and the wind control segment 20 are mounted on the support plate 30. The support plate 30 can be fixed within the test area of the wind tunnel 40 or detachably connected to the experimental platform to carry and support the aforementioned functional components.

[0027] The tracer transition group section 10 is located at the end of the supporting cross plate 30 close to the exit of the wind tunnel 40, that is, it is located upstream of the incoming wind field of the wind tunnel experiment, which is conducive to more realistic simulation of the tracer and transition behavior during the development of the wind turbine wake in the wind farm; the wind control group section 20 is located at the end of the supporting cross plate 30 away from the wind tunnel exit, that is, it is located downstream of the incoming wind field of the wind tunnel experiment, ensuring that the wind turbine component 21 can fully accept the adjusted incoming wind field and realize effective control of the windward angle.

[0028] Specifically, the tracer transition group section 10 includes: a tracer component 11 and a transition component 12, which are interconnected to form a continuous airflow processing module.

[0029] The tracer assembly 11 is used to release tracer particles, such as smoke, oil mist, or other visible particles, at the beginning of a wind tunnel experiment. These particles mix thoroughly with the original laminar wind field in the wind tunnel, the initial incoming wind field, thereby generating a first incoming wind field with visual characteristics. The addition of tracer particles not only facilitates observation of wind field flow patterns but also improves the controllability and accuracy of subsequent turbulence modeling.

[0030] The transition assembly 12 is located downstream of the tracer assembly 11. Its structure can take the form of a grid, spoiler strips, grid array, or adjustable spoiler vanes. It is used to guide the first incoming wind field from its original laminar state to a turbulent state, thereby forming a second incoming wind field that better matches the actual wind field characteristics. This turbulent wind field, in terms of structure and velocity distribution, more closely resembles the wake conditions of a wind farm, providing a reliable incoming wind field input for subsequent wind control experiments.

[0031] The wind control section 20 is used to simulate the response behavior of wind turbines in a wind farm under different wake conditions. It is provided with a wind turbine component 21, which is used to construct a third incoming wind field with diversity and controllability by adjusting the relative windward angle between the component and the second incoming wind field.

[0032] The wind turbine assembly 21 comprises a plurality of wind turbine components 211 arranged in an array. These wind turbine components 211 are evenly spaced on the support structure of the wind control section 20 and are driven by motors or mechanically connected to achieve independent rotation about their respective central axes, with the rotation direction parallel to the extension direction of the support cross plate 30. By controlling the rotation angle combinations of different wind turbine components 211, a variety of flow interference patterns can be generated, further evolving into multiple types of third-flow wind fields, which are used to simulate the wake changes caused by factors such as wind turbine layout position, yaw adjustment, and wind speed gradient in a wind farm.

[0033] The rotation angles of wind turbine components 211 can be adjusted collectively or individually by a pre-set control system, providing the entire device with excellent control accuracy and reconfigurability. Furthermore, in practical applications, the wind tunnel experimental device can also reserve expansion interfaces to integrate wind speed measurement devices, flow field visualization acquisition systems, or yaw control algorithm verification modules, thereby expanding its experimental application range.

[0034] The present application provides a wind tunnel experimental device, including a tracer transition group, a wind control group and a supporting cross plate. The tracer transition group includes a tracer component and a transition component, which are respectively used to generate tracer particles and convert the incoming wind field from laminar flow to turbulent flow; the wind control group includes a plurality of wind turbine components arranged in an array and independently rotatable, which are used to adjust the windward angle of the incoming wind field and construct multiple types of incoming wind fields. It can achieve precise control of the wind field state from laminar flow to turbulent flow, enhance the authenticity and repeatability of the experimental wind field; multiple wind turbine components independently adjust the windward angle, and improve the diversity and flexibility of the wind tunnel experimental scene simulation; the device has a simple structure, strong scalability and convenient operation.

[0035] In summary, the wind tunnel experimental device provided in this application realizes the full-process control of the construction, state adjustment and wake interference simulation of the incoming wind field through modular design, which can effectively improve the efficiency and accuracy of wake modeling and yaw optimization research.

[0036] In one embodiment, the wind control section 20 is further provided with: a tail plate assembly 22, the tail plate assembly 22 being connected to the wind turbine assembly 21; The tail plate assembly 22 includes a wake development plate 221, an angle adjuster 222 and a tail wing plate 223; One end of the wake development plate 221 away from the entrance of the wind tunnel 40 is connected to one end of the tail wing plate 223 close to the entrance of the wind tunnel 40; The angle adjuster 222 is disposed between the wake development plate 221 and the tail wing 223 . Under the action of the angle adjuster 222 , the tail wing 223 rotates around the end of the wake development plate 221 away from the entrance of the wind tunnel 40 .

[0037] In this embodiment, continue to refer to Figure 1 The wind control section 20 is also provided with a tail plate assembly 22, which is connected to the aforementioned wind turbine assembly 21 and is used to further regulate the wake effect caused by the wind turbine component 211 on the incoming wind field, thereby more accurately simulating the wake interference and evolution process between multiple units in an actual wind farm, and improving the simulation accuracy and adaptability of the wind tunnel experiment.

[0038] Specifically, the tail plate assembly 22 includes a wake development plate 221 , an angle adjuster 222 and a tail wing plate 223 .

[0039] The wake development plates 221 are located downstream of the multiple wind turbine components 211 in the wind control section 20, arranged along the incoming wind flow. They extend the wake paths formed by the wind turbine components 211, thereby providing a controllable channel for the spatial development of the wake. In practical applications, the wake development plates 221 can be made of low-resistance materials or surface spoiler structures to control the speed and size of the wake diffusion.

[0040] The tail wing plate 223 is arranged at the end of the wake development plate 221, that is, on the side of the wake development plate 221 away from the entrance of the wind tunnel 40, thereby forming an adjustable structure of the wake boundary, which is used to simulate complex aerodynamic effects such as the recirculation zone, shear layer or pressure disturbance near the wake boundary of the wind turbine.

[0041] In this embodiment, the tail wing 223 is connected to the wake development plate 221 via an angle adjuster 222. This angle adjuster 222 controls the rotation of the tail wing 223 around the end of the wake development plate 221 facing away from the wind tunnel entrance, allowing the wing 223 to flexibly swing within a range of angles. In practical applications, this adjustment can be achieved using an electronically controlled servo, a mechanical linkage system, or a programmable motor driver to meet specific simulation requirements for wake disturbance angle and wake steering under different experimental conditions.

[0042] Through the above-mentioned structural setting, the tail plate assembly 22 can not only simulate the changing characteristics of the wind turbine wake under different installation angles, wind speed gradients or terrain disturbance conditions, but also cooperate with the wind turbine assembly 21 to achieve precise control of the wake development path, wake distribution pattern and interference intensity of adjacent wind turbines.

[0043] In practice, the modular design of the tail panel assembly 22 also makes the device highly scalable, adapting to a variety of wind turbine types and wind tunnel sizes. Programmable control of the angle of the tail panel 223 also allows for rapid switching between experimental scenarios, improving experimental efficiency, reducing adjustment time, and meeting the needs of continuous experimentation.

[0044] In one embodiment, the device further comprises: a laminar transition plate 50; the tracer assembly 11 comprises: a tracer particle generator 111, a tracer particle transport conduit 112, and a tracer particle output interface 113; The laminar flow transition plate 50 is disposed at one end of the supporting horizontal plate 30 close to the entrance of the wind tunnel 40, and the laminar flow transition plate 50 extends from the supporting horizontal plate 30 close to the entrance of the wind tunnel 40 in the direction of the entrance of the wind tunnel 40 out of the supporting horizontal plate 30; The tracer particle generator 111 is arranged on the outside of the wind tunnel 40, and the tracer particle output interface 113 is arranged on the side of the laminar transition plate 50 close to the entrance of the wind tunnel 40; the tracer particle generator 111 is connected to the tracer particle output interface 113 through the tracer particle transport pipeline 112, and the orthographic projection of the tracer particle output interface 113 on the laminar transition plate 50 does not overlap with the orthographic projection of the supporting cross plate 30 on the laminar transition plate 50.

[0045] Continue to refer to Figure 1 The structural diagram of the wind tunnel experimental device is shown, and Figure 2 The structural diagram of the tracer transition component shown in the figure, the device also includes: a laminar transition plate 50, which is used to cooperate with the tracer component 11 to better guide and control the release process of the tracer particles, and at the same time contribute to the stable development of the incoming wind field and the control of the laminar-turbulent conversion process.

[0046] The laminar flow transition plate 50 is disposed at one end of the supporting transverse plate 30 close to the entrance of the wind tunnel 40 . Specifically, the laminar flow transition plate 50 extends from the supporting transverse plate 30 close to the entrance of the wind tunnel 40 toward the entrance of the wind tunnel 40 .

[0047] In this embodiment, the tracer assembly 11 includes a tracer particle generator 111, a tracer particle transport conduit 112, and a tracer particle output interface 113. The tracer particle generator 111 is located outside the wind tunnel 40 and is used to continuously generate tracer particles, such as smoke, fine oil droplets, and atomized water particles, for visualizing wind field structure or velocity field distribution before and during an experiment. In practical applications, the tracer particle generator 111 can select tracer media with different particle sizes, densities, or response times based on experimental requirements to accommodate different wind tunnel experimental scenarios.

[0048] The tracer particle output port 113 is located on the side of the laminar flow transition plate 50 near the wind tunnel entrance. It is used to stably release the tracer particles, delivered via the transport duct 112, into the initial incoming wind field. This arrangement places the tracer particle injection point closer to the wind tunnel entrance, effectively improving the mixing efficiency of the tracer particles with the initial incoming wind field while preventing interference with the experimental section's wind field that could affect measurement results.

[0049] To achieve this process, the tracer particle generator 111 is connected to the tracer particle output interface 113 through the tracer particle transport pipe 112, so that the tracer particles generated by the tracer particle generator 111 can be stably and continuously transported to the output port and then injected into the wind tunnel entrance area.

[0050] In this embodiment, the orthographic projection of the tracer particle output interface 113 on the laminar transition plate 50 does not overlap with the orthographic projection of the support plate 30 on the laminar transition plate 50. This design ensures that the tracer particle output path is isolated from the support plate structure, avoiding flow mixing caused by structural obstruction, airflow interference, or particle deposition, thereby ensuring the accuracy of experimental data and the visual clarity of the tracing effect.

[0051] Through the coordination of the above structures, not only the injection stability and spatial distribution uniformity of the tracer particles are improved, but also the laminar flow control and turbulence generation processes are effectively coordinated, so that the entire wind tunnel experimental device has higher control flexibility and experimental repeatability in accurately simulating the incoming flow state and wake evolution.

[0052] In one embodiment, the transition assembly 12 includes: a plurality of laminar transition filaments 121 arranged at intervals along the inflow direction of the initial incoming wind field, the plurality of laminar transition filaments 121 being disposed on a side of the laminar transition plate 50 away from the entrance of the wind tunnel 40, and the orthographic projections of the plurality of laminar transition filaments 121 on the laminar transition plate 50 being located inside the orthographic projection of the supporting cross plate 30 on the laminar transition plate 50; The plurality of laminar transition filaments 121 are used to transform the first incoming wind field from a laminar state to a turbulent state.

[0053] In this embodiment, continue to refer to Figure 1 The structural diagram of the wind tunnel experimental device is shown in the figure and Figure 2 As shown in the structural schematic diagram of the tracer transition group segment, the transition component 12 includes: a plurality of laminar transition filaments 121 arranged at intervals along the inlet direction of the initial incoming wind field, which are used to gradually transform the airflow state from laminar flow to turbulent flow through the disturbance effect when the first incoming wind field flows through, thereby obtaining a second incoming wind field that is closer to the real natural wind field state.

[0054] Multiple laminar flow transition filaments 121 are installed on the side of the laminar flow transition plate 50 away from the entrance of the wind tunnel 40. By placing these laminar flow transition filaments 121 in this area, the first incoming wind field, after being mixed with tracer particles, can be effectively disturbed as it flows through, causing the first incoming wind field to transition, thereby improving the controllability and repeatability of turbulence generation.

[0055] To ensure the stability of the transition effect and the rationality of the structural arrangement, the orthographic projections of the plurality of laminar transition filaments 121 on the laminar transition plate 50 are located inside the orthographic projections of the supporting transverse plate 30 on the laminar transition plate 50 .

[0056] Through the above arrangement, multiple laminar transition filaments 121 can effectively disrupt the first incoming wind field, causing it to naturally transition from a laminar state to a turbulent state. While ensuring the authenticity of the wind field, it provides stable and controllable turbulent inflow conditions for the wind turbine components in the subsequent wind control section, thereby improving the simulation capability and experimental accuracy of the entire wind tunnel experimental device.

[0057] In one embodiment, the laminar flow transition plate 50 is further provided with a sandpaper roughening belt 122 on a side away from the entrance of the wind tunnel 40. The sandpaper roughening belt 122 is provided adjacent to the laminar flow transition wire 121 and is located on a side close to the entrance of the wind tunnel 40. The sandpaper rough belt 122 is used to transform the first incoming wind field from a laminar flow state to a turbulent flow state.

[0058] In this embodiment, refer to Figure 3 As shown in the top view of the wind tunnel experimental device, a sandpaper rough belt 122 is also provided on the side of the laminar transition plate 50 away from the entrance of the wind tunnel 40, which is used to cooperate with the laminar transition wire 121 to achieve effective disturbance of the first incoming wind field, thereby converting the laminar airflow into a turbulent state, thereby improving the diversity of turbulence generation and simulation accuracy in the wind tunnel experiment.

[0059] A roughened sandpaper strip 122 is positioned adjacent to the laminar flow transition filament 121, specifically on the side near the wind tunnel 40 entrance. This ensures that the first incoming flow field passes through an area with a certain surface roughness before entering the disturbance zone of the laminar flow transition filament 121. This arrangement helps induce disturbances within the boundary layer closer to the wind tunnel entrance, enhancing the generation of turbulent components in the incoming flow and widening the range of disturbance modulation. This improves the initial response speed and uniformity of the intensity distribution of the overall turbulence simulation.

[0060] Because the sandpaper rough strip 122 is adjacent to the laminar transition filaments 121 and is arranged sequentially with them along the incoming flow direction, the two together constitute a composite transition structure. After the first incoming flow wind field passes through the primary disturbance of the sandpaper rough strip 122, it further stimulates a more intense turbulent conversion process through the arrangement of the laminar transition filaments 121, which is conducive to more comprehensive control of the starting point and characteristic parameters of turbulence development in wind tunnel experiments.

[0061] In one embodiment, the wind turbine assembly 21 further includes: a motor controller 212; The motor controller 212 is disposed outside the wind tunnel 40 and is connected to the plurality of wind turbine components 211 via a communication line 213 ; The motor controller 212 is used to control the wind turbine component 211 to change its rotation angle in a direction parallel to the supporting horizontal plate 30 , so as to adjust the windward angle with respect to the second incoming wind field.

[0062] Continue to refer to Figure 1 The structural diagram of the wind tunnel experimental device is shown, and Figure 4 The wind turbine assembly 21 also includes a motor controller 212 for controlling the rotation angle of the wind turbine component 211. Motor controller 212 is mounted outside of wind tunnel 40 to facilitate operation and maintenance while preventing the complex airflow inside the wind tunnel from interfering with its stability and performance.

[0063] The motor controller 212 is connected to the multiple wind turbine components 211 via communication lines 213, enabling independent control and synchronous coordination of each wind turbine component 211. This allows for flexible adjustment of the rotation angle of each wind turbine component 211 parallel to the support cross plate 30 according to experimental needs. This control method allows the entire wind turbine assembly 21 to simulate different windward attitudes and operating conditions, enhancing the ability to control the secondary incoming wind field.

[0064] Motor controller 212 not only supports group control of multiple wind turbine components 211 but also dynamically adjusts the angle combination of wind turbine components 211 during experiments based on preset instructions or real-time feedback, thereby simulating complex and variable wake evolution. Its external placement also facilitates signal transmission stability and troubleshooting efficiency, improving the reliability and scalability of the overall system.

[0065] Through the precise control of the motor controller 212, the wind turbine component 211 redistributes the second incoming wind field under different angle combinations, allowing experimenters to more intuitively study the impact of different windward angle changes on the wake structure, energy loss and operating efficiency of adjacent wind turbines, thereby providing experimental support for the optimization of wake control strategies in wind farms.

[0066] In one embodiment, the wind turbine component 211 includes: a turntable 2111, a wind turbine 2112, a drive motor 2113, and a turntable fixing base 2114. The support horizontal plate 30 is provided with a plurality of grooves, and the spacing between two of the grooves is the same. The turntable 2111 includes a first end surface and a second end surface that are oppositely arranged. The first end surface is connected to the support horizontal plate 30, and the second end surface is located on a side away from the support horizontal plate 30. The wind turbine 2112 passes through the groove of the supporting horizontal plate 30 and is fixedly connected to the first end surface of the rotating disk 2111, and the power end of the driving motor 2113 is connected to the second end surface of the rotating disk 2111; The turntable 2111 is disposed in the groove of the support horizontal plate 30 through the turntable fixing base 2114 and is rotatably connected to the support horizontal plate 30; The communication end of the driving motor 2113 is connected to the motor controller 212 via the communication line 213 .

[0067] Continue to refer to Figure 1 and Figure 4 The wind turbine components 211 include a turntable 2111, a wind turbine 2112, a drive motor 2113, and a turntable fixing base 2114. The support plate 30 is provided with multiple grooves, which are evenly spaced along the support plate 30 to ensure that the wind turbine components 211 are evenly arranged, facilitating the simulation of wind field variations under various array arrangements.

[0068] The turntable 2111 is disc-shaped, with a first end face and a second end face positioned opposite each other. It is mounted within a groove in the support plate 30 via a turntable mounting base 2114. The first end face faces the support plate 30 and is rotatably connected thereto. The second end face faces away from the support plate 30, providing a mounting surface for the drive motor. The wind turbine 2112 is fixedly connected to the first end face of the turntable 2111, ensuring stable mounting and rotation with the turntable.

[0069] A drive motor 2113 is mounted on the second end face of the turntable 2111. The power end of the drive motor 2113 directly rotates the turntable 2111, thereby causing the wind turbine 2112 to change its angle toward the second incoming wind field. The turntable 2111 is rotatably connected to the support crossbar 30 via a turntable mounting base 2114. Driven by the drive motor 2113, the turntable 2111 can flexibly rotate to adjust the wind turbine 2112's posture. This structure not only ensures the mechanical stability of the device but also improves the adaptability of the wind turbine components 2111 to various experimental requirements.

[0070] The communication terminal of the drive motor 2113 is connected to the motor controller 212 via a communication line 213. Based on the experimental settings or real-time feedback signals, the motor controller 212 issues control instructions to the drive motor 2113, precisely adjusting the wind turbine 2112's angle of contact with the wind, creating a more targeted third-flow wind field and effectively simulating the changes in wake characteristics under different operating conditions. This structural design simplifies the assembly process of the wind turbine components 211, improving system scalability and experimental operation efficiency.

[0071] In one embodiment, the wind control group section 20 is further provided with: a fixing plate 23; The fixing plate 23 is arranged on the supporting horizontal plate 30, and a plurality of through holes 231 are provided on the fixing plate 23. The interval distance between two through holes 231 is the same. The through holes 231 are arranged in a one-to-one correspondence with the grooves. The wind turbine 2112 passes through the through holes 231 and is fixedly connected to the first end face of the turntable 2111.

[0072] Continue to refer to Figure 1 、 Figure 3 and Figure 4 The wind control group 20 is also provided with a fixing plate 23 to further enhance the installation stability and positioning accuracy of the wind turbine components 211. The fixing plate 23 is installed on the supporting cross plate 30 and extends along the length direction of the wind control group 20. The whole structure is strip-shaped. A plurality of through holes 231 are opened on the fixing plate 23. Figure 3 As shown, the through holes 231 are arranged at equal intervals along the length direction thereof, ensuring that the wind turbine components 211 can be evenly installed according to a predetermined arrangement, which is beneficial to the orderly regulation of the wind field in the experiment.

[0073] Each through-hole 231 is precisely aligned with the corresponding groove, achieving a one-to-one correspondence. During installation, wind turbine 2112 passes through through-holes 231 on fixing plate 23 and is fixedly connected to the first end surface of turntable 2111. The auxiliary positioning provided by fixing plate 23 allows for greater positioning accuracy of wind turbine 2112 during installation, while also enhancing the overall structure's stability against airflow impacts.

[0074] In one embodiment, the wind turbine 2112 includes: a support rod 2115 and a windward mechanism 2116; The support rod 2115 is arranged perpendicularly relative to the support horizontal plate 30 and the fixed plate 23, and the first end of the support rod 2115 is fixedly connected to the first end surface of the turntable 2111; The windward mechanism 2116 is disposed at the second end of the support rod 2115 away from the support horizontal plate 30 and the fixed plate 23 . The windward mechanism 2116 can rotate at any angle in a direction parallel to the support horizontal plate 30 .

[0075] Continue to refer to Figure 1 and Figure 4 Wind turbine 2112 includes a support rod 2115 and a windward mechanism 2116, which are used to adjust wind direction, thereby more flexibly simulating various wind conditions. Support rod 2115 is mounted vertically, at right angles to support cross plate 30 and fixed plate 23, making the overall structure more stable and facilitating wind direction control. The first end of support rod 2115 is fixedly connected to the first end surface of turntable 2111, serving as the mounting base for windward mechanism 2116 and ensuring good support and transmission stability during rotation.

[0076] The windward mechanism 2116 is mounted at the second end of the support rod 2115, away from the support cross plate 30 and the fixed plate 23. It features a compact structure and flexible rotation. It can rotate horizontally around the axis of the support rod 2115, parallel to the support cross plate 30, to any angle, enabling precise adjustment of the wind's angle of action. This rotation angle is not limited to a preset discrete angle and can be flexibly adjusted based on experimental requirements to accommodate complex or changing wind flow environments.

[0077] Through the above-mentioned structural design, the wind turbine 2112 can quickly adjust the windward angle under different wind field conditions, improve the adjustment and adaptability of the wind control section 20 to the experimental wind field, provide repeatable and controllable wind flow conditions for various experimental working conditions, and thus improve the accuracy and efficiency of wind tunnel experiments.

[0078] In one embodiment, the windward mechanism 2116 includes a plurality of rotatable blades 2117 and a blade fixing base 2118; The blade fixing base 2118 is fixedly connected to the support rod 2115, and the plurality of blades 2117 are rotatably connected to the blade fixing base 2118; The plurality of blades 2117 are disposed on the windward side of the second incoming wind field and can rotate under the action of the second incoming wind field.

[0079] Continue to refer to Figure 4 Windward mechanism 2116 includes a plurality of rotatable blades 2117 and a blade fixing base 2118, which are used to adaptively match the flow direction and intensity of the second incoming wind field. Blade fixing base 2118 is mounted on the second end of support rod 2115. The secure connection ensures that it does not move or vibrate during rotation, thus providing a reliable mounting platform for blades 2117.

[0080] Multiple blades 2117 are rotatably mounted on a blade mounting base 2118 at evenly spaced locations around the blades, ensuring efficient utilization of wind energy. These blades 2117 are rotatably connected to the blade mounting base 2118 via bearings or hinged joints, allowing each blade to rotate freely under the influence of the secondary wind flow. The blades' rotation responds to changes in wind speed and direction in the secondary wind flow, allowing their angles to be adjusted in real time to achieve optimal aerodynamic response.

[0081] Multiple blades 2117 are directly exposed to the windward side of the second incoming wind field, generating a rotational effect under the impact of the wind, thereby driving aerodynamic feedback for the entire windward mechanism. This structure not only simulates the operating state of a wind turbine in a real wind environment, but also reflects the local flow characteristics of the current wind field through its rotational state, facilitating research on the impact of different wind field distributions on the response characteristics of the wind turbine. Through this design, windward mechanism 2116 possesses excellent dynamic response capabilities and structural stability, further improving the accuracy and adaptability of wind tunnel experiments.

[0082] In one embodiment, the device further comprises: a guide plate 60; The guide plate 60 is provided at the entrance of the wind tunnel 40 and is connected to the side of the tracer transition segment 10 close to the entrance of the wind tunnel 40; The guide plate 60 is an arc-shaped structure. The height of the guide plate 60 from the bottom wall of the wind tunnel 40 gradually increases from the end close to the entrance of the wind tunnel 40 to the end away from the entrance of the wind tunnel 40, and is flush with the tracer transition group 10 at the connection point. The guide plate 60 is used to guide the initial incoming wind field so that the initial incoming wind field flows along the surface of the guide plate 60 from the entrance of the wind tunnel 40 to the tracer transition group section 10.

[0083] Continue to refer to Figure 1 and Figure 3 The wind tunnel test apparatus also includes a guide plate 60, which optimizes the entry path of the initial incoming wind field, thereby improving the flow field stability and experimental accuracy of the wind tunnel experiment. The guide plate 60 is installed at the entrance of the wind tunnel 40 and is connected to the side of the tracer transition segment 10 near the wind tunnel entrance to ensure smooth transition and guidance of the wind field.

[0084] The guide plate 60 adopts a curved structure, with a height difference between its bottom edge and the bottom wall of the wind tunnel 40. This height difference starts at the end closest to the wind tunnel entrance and gradually increases toward the end farther from the wind tunnel entrance, ultimately reaching a level with the tracer transition segment 10 at its connection. This structural design effectively reduces sudden changes in the initial incoming wind field as it enters the wind tunnel, allowing streamlines to transition more smoothly along the curved surface of the guide plate 60 to the tracer transition segment 10.

[0085] At the start of a wind tunnel experiment, the initial incoming airflow enters through the entrance of wind tunnel 40, first encounters the curved surface of guide plate 60, then ascends under its guidance and flows along the surface of guide plate 60, ultimately transitioning naturally to the region where tracer transition segment 10 is located. This flow-guiding process effectively prevents the formation of turbulence or eddies in the wind field, ensuring that the airflow entering the tracer region has more laminar characteristics.

[0086] The addition of guide plates 60 provides the wind tunnel with enhanced inflow control capabilities, making it particularly suitable for tracer experiments and laminar transition experiments, which require high wind flow quality. This helps improve the repeatability and reliability of experimental data. Furthermore, this structure provides a stable flow field foundation for subsequent experiments such as wind control and wake development.

[0087] In one embodiment, the apparatus further comprises: at least one transition plate 70; At least one transition plate 70 is disposed between the tracer transition segment 10 and the wind control segment 20; The at least one transition plate 70 is used to enhance the turbulent state of the second incoming wind field.

[0088] Continue to refer to Figure 1 or Figure 3 The wind tunnel experimental apparatus also includes at least one transition plate 70, which is used to further optimize the turbulent characteristics of the second incoming wind field to enhance the wind field's consistency and control effectiveness. This transition plate 70 is located between the tracer transition segment 10 and the wind control segment 20, in the middle of the flow path of the second incoming wind field. It performs the combined functions of connecting, guiding, and disturbing the wind flow.

[0089] Specifically, the placement of at least one transition plate 70 is strategically designed to precisely locate the critical area where the second incoming wind field transitions from a transition state to a wind control and regulation state. After passing through the transition assembly 12, the second incoming wind field has already transitioned from a laminar to a turbulent state. However, as it passes through the central region of the device, it may experience localized turbulence unevenness or energy attenuation. At this point, the transition plate 70, through its unique structural form (e.g., a corrugated, perforated, or spoiler-strip design), creates a secondary disturbance in the wind flow, thereby enhancing turbulence intensity, stability, and spatial expansibility.

[0090] The multiple transition plates 70 can be arranged in a longitudinally parallel, transversely staggered, or combined array configuration, allowing for flexible adjustment based on experimental requirements to ensure that the second incoming wind field exhibits fully developed and stable turbulence characteristics before entering the wind control section 20. This design helps improve the response accuracy and experimental effectiveness of the wind turbine components 211 in controlling wind direction and intensity, while also providing a high-quality incoming flow foundation for further applications in wake control and wind tunnel simulation.

[0091] Therefore, the transition plate 70 not only serves as a bridge connecting the tracer transition section 10 and the wind control section 20 in terms of structure, but also functionally achieves the pre-processing goals of turbulence enhancement and wind field regulation, further improving the performance and adaptability of the entire wind tunnel experimental device.

[0092] The wind tunnel experimental device provided in the present application is as follows: at the beginning of the experiment, the initial incoming flow wind field enters the wind tunnel entrance and flows to the tracer transition group section under the guidance of the guide plate; the tracer particles generated by the tracer component are transported to the front end of the laminar transition plate through the tracer particle transport pipeline and injected into the wind field, so that the initial incoming flow and the particles are fully mixed to form a visual first incoming flow wind field; then, the first incoming flow wind field passes through the area provided with laminar transition wires and sandpaper rough belts, and is effectively converted into a turbulent state to form a second incoming flow wind field; after passing through the transition plate provided between the tracer transition group section and the wind control group section, the turbulent state of the second incoming flow wind field is further enhanced; multiple wind turbine components in the wind control group section adjust the windward angle under the drive of the motor controller, adjust the angle of the second incoming flow wind field, and generate multiple types of third incoming flow wind fields; finally, through the combined action of the wake development plate, angle adjuster and tail wing plate in the tail plate assembly, the wake structure is further shaped and controlled, completing the entire wind tunnel experimental process.

[0093] The present application provides a wind tunnel experimental device, including a tracer transition group, a wind control group and a supporting cross plate. The tracer transition group includes a tracer component and a transition component, which are respectively used to generate tracer particles and convert the incoming wind field from laminar flow to turbulent flow; the wind control group includes a plurality of wind turbine components arranged in an array and independently rotatable, which are used to adjust the windward angle of the incoming wind field and construct multiple types of incoming wind fields. It can achieve precise control of the wind field state from laminar flow to turbulent flow, enhance the authenticity and repeatability of the experimental wind field; multiple wind turbine components independently adjust the windward angle, and improve the diversity and flexibility of the wind tunnel experimental scene simulation; the device has a simple structure, strong scalability and convenient operation.

[0094] Based on the same inventive concept, the second aspect of the embodiment of the present application provides a method for applying the wind tunnel experimental device described in the first aspect of the present application, such as Figure 5 As shown, the method includes: Step S101: After the wind tunnel experiment begins, the tracer assembly of the tracer transition section is turned on, and tracer particles are generated by the tracer assembly so that the tracer particles are mixed with the initial incoming wind field to obtain a first incoming wind field. Step S102: After the first incoming wind field reaches the transition component of the tracer transition group, the transition component converts the first incoming wind field from a laminar state to a turbulent state to obtain a second incoming wind field; Step S103: After the second incoming wind field reaches the wind control group section, adjusting the rotation angles of the plurality of wind turbine components arranged in the array in a direction parallel to the supporting cross plate according to the first angle rotation strategy to obtain a first rotation angle combination of the wind turbine components, so that the second incoming wind field forms a first type of third incoming wind field under the action of the wind turbine components in the first rotation angle combination; Step S104, after obtaining the third incoming wind field of the first type, adjust the rotation angle of each of the multiple wind turbine components arranged in the array along the direction parallel to the supporting horizontal plate according to the second angle rotation strategy, and obtain a second rotation angle combination of the wind turbine components, so that the third incoming wind field of the first type forms a second type of third incoming wind field under the action of the wind turbine components of the second rotation angle combination.

[0095] Specifically, step S101: After the wind tunnel experiment begins, the tracer assembly in the tracer transition section is activated, and the tracer particle generator begins operating, generating a large number of tracer particles. These particles are transported through the tracer particle transport pipeline to the tracer particle output interface. From this interface, they are released into the wind tunnel entrance, enter the wind field, and fully mix with the initial incoming air field, forming a first incoming air field containing tracer particles.

[0096] Step S102: As the first incoming airflow passes through the tracer transition section, it passes through a transition assembly mounted on a laminar transition plate. This assembly includes multiple laminar transition filaments and a roughened sandpaper strip. These components disrupt the airflow, transforming it from a laminar state to a second, turbulent state, creating the foundation for subsequent wind field control.

[0097] Step S103: The second incoming wind farm continues forward and enters the wind control section. At this point, the motor controller controls the multiple wind turbine components according to a pre-set first angle rotation strategy, adjusting their rotation angles parallel to the supporting cross plates to form a first rotation angle combination. This combination of wind turbine components acts together on the second incoming wind farm, changing its flow state and forming a third incoming wind farm of the first type.

[0098] Step S104: Based on the first type of third incoming wind farm, the motor controller continues to adjust the angular arrangement of the wind turbine components, resetting each wind turbine component to a second rotation angle combination according to the second angle rotation strategy. In this combination, the wind turbine components further disturb the wind farm, causing the first type of third incoming wind farm to change, ultimately transforming it into the second type of third incoming wind farm, thereby achieving simulated control of multiple wind farm configurations.

[0099] Each embodiment in this specification focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other.

[0100] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0101] It should also be noted that, in this article, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or terminal device.

[0102] The above describes in detail the wind tunnel test apparatus and method provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The descriptions of the above embodiments are intended only to facilitate understanding of the present application, and the contents of this specification should not be construed as limiting the present application. Furthermore, those skilled in the art will appreciate that various modifications may be made to the specific implementation methods and scope of application based on the present application. While it is not necessary and impossible to exhaustively enumerate all implementation methods here, any obvious variations or modifications derived therefrom remain within the scope of protection of the present application.

Claims

1. A wind tunnel experimental device, characterized in that: The device comprises: a tracer transition group segment, a wind control group segment and a supporting transverse plate, wherein the tracer transition group segment and the wind control group segment are both arranged on the supporting transverse plate, and the tracer transition group segment is located at an end of the supporting transverse plate close to the wind tunnel outlet, and the wind control group segment is located at an end of the supporting transverse plate away from the wind tunnel outlet; The tracer transition group segment is provided with: a tracer component and a transition component, and the tracer component is connected to the transition component; The tracer component is used to generate tracer particles at the beginning of the wind tunnel experiment, so that the initial incoming wind field is mixed with the tracer particles to obtain a first incoming wind field; The transition component is used to convert the first incoming wind field from a laminar flow state to a turbulent flow state to obtain a second incoming wind field; The wind control group section is provided with: a wind turbine component, the wind turbine component is used to adjust the windward angle with the second incoming wind field; The wind turbine assembly includes: a plurality of wind turbine components arranged in an array, each wind turbine component can independently rotate in a direction parallel to the supporting horizontal plate to obtain a plurality of rotation angle combinations, so that the second incoming wind field forms different types of third incoming wind fields under the action of the wind turbine components with different rotation angle combinations.

2. The wind tunnel test device according to claim 1, characterized in that: The wind control section is further provided with: a tail plate assembly, the tail plate assembly being connected to the wind turbine assembly; The tail plate assembly includes a wake development plate, an angle adjuster and a tail wing plate; An end of the wake development plate away from the entrance of the wind tunnel is connected to an end of the tail wing plate close to the entrance of the wind tunnel; The angle adjuster is arranged between the wake development plate and the tail wing plate. Under the action of the angle adjuster, the tail wing plate rotates around the end of the wake development plate away from the entrance of the wind tunnel.

3. The wind tunnel test device according to claim 1, characterized in that: The device further comprises: a laminar flow transition plate; the tracer assembly comprises: a tracer particle generator, a tracer particle transport pipeline, and a tracer particle output interface; The laminar flow transition plate is provided at one end of the supporting horizontal plate close to the entrance of the wind tunnel, and the laminar flow transition plate extends out of the supporting horizontal plate from the end of the supporting horizontal plate close to the entrance of the wind tunnel in the direction of the entrance of the wind tunnel; The tracer particle generator is arranged on the outside of the wind tunnel, and the tracer particle output interface is arranged on the side of the laminar transition plate close to the entrance of the wind tunnel; the tracer particle generator is connected to the tracer particle output interface through the tracer particle transport pipeline, and the orthographic projection of the tracer particle output interface on the laminar transition plate does not overlap with the orthographic projection of the supporting cross plate on the laminar transition plate.

4. The wind tunnel test device according to claim 3, characterized in that: The transition assembly comprises: a plurality of laminar transition filaments arranged at intervals along the inflow direction of the initial incoming wind field, the plurality of laminar transition filaments being arranged on a side of the laminar transition plate away from the entrance of the wind tunnel, and the orthographic projections of the plurality of laminar transition filaments on the laminar transition plate being located inside the orthographic projection of the supporting cross plate on the laminar transition plate; The plurality of laminar transition filaments are used to transform the first incoming wind field from a laminar state to a turbulent state.

5. The wind tunnel test device according to claim 4, characterized in that: The laminar flow transition plate is further provided with a sandpaper rough belt on a side away from the entrance of the wind tunnel. The sandpaper rough belt is provided adjacent to the laminar flow transition plate and is located on a side close to the entrance of the wind tunnel. The sandpaper rough belt is used to transform the first incoming wind field from a laminar flow state to a turbulent flow state.

6. The wind tunnel test device according to claim 1, characterized in that: The wind turbine assembly further includes: a motor controller; The motor controller is arranged outside the wind tunnel, and the motor controller is connected to the plurality of wind turbine components via a communication line; The motor controller is used to control the wind turbine component to change the rotation angle in a direction parallel to the supporting transverse plate, so as to adjust the windward angle with respect to the second incoming wind field.

7. The wind tunnel test device according to claim 6, characterized in that: The wind turbine components include: a turntable, a wind turbine, a drive motor, and a turntable fixing base. The support horizontal plate is provided with a plurality of grooves, and the spacing between two of the grooves is the same. The turntable includes a first end surface and a second end surface that are oppositely arranged. The first end surface is connected to the support horizontal plate, and the second end surface is located on a side away from the support horizontal plate. The wind turbine is fixedly connected to the first end surface of the turntable, and the power end of the drive motor is connected to the second end surface of the turntable; The turntable is arranged in the groove of the supporting horizontal plate through the turntable fixing base and is rotatably connected to the supporting horizontal plate; The communication terminal of the driving motor is connected to the motor controller via the communication line.

8. The wind tunnel test device according to claim 7, characterized in that: The wind control group section is also provided with: a fixing plate; The fixing plate is arranged on the supporting horizontal plate, and a plurality of through holes are provided on the fixing plate. The interval distance between two of the through holes is the same. The through holes are arranged in a one-to-one correspondence with the grooves. The wind turbine passes through the through holes and is fixedly connected to the first end face of the turntable.

9. The wind tunnel test device according to claim 8, characterized in that: The wind turbine comprises: a support rod and a windward mechanism; The support rod is vertically arranged relative to the support horizontal plate and the fixed plate, and the first end of the support rod is fixedly connected to the first end surface of the turntable; The windward mechanism is arranged at the second end of the support rod away from the support transverse plate and the fixed plate, and the windward mechanism can rotate at any angle along a direction parallel to the support transverse plate.

10. The wind tunnel test device according to claim 9, characterized in that: The windward mechanism includes a plurality of rotatable blades and a blade fixing base; The blade fixing base is fixedly connected to the support rod, and the plurality of blades are rotatably connected to the blade fixing base; The plurality of blades are arranged on the windward side of the second incoming wind field and can rotate under the action of the second incoming wind field.

11. The wind tunnel test device according to claim 1, characterized in that: The device further comprises: a guide plate; The guide plate is arranged at the entrance of the wind tunnel and is connected to a side of the tracer transition segment close to the entrance of the wind tunnel; The guide plate is an arc-shaped structure, and the height of the guide plate from the bottom wall of the wind tunnel gradually increases from the end close to the entrance of the wind tunnel to the end away from the entrance of the wind tunnel, and is flush with the tracer transition group segment at the connection; The guide plate is used to guide the initial incoming wind field so that the initial incoming wind field flows along the surface of the guide plate from the entrance of the wind tunnel to the tracer transition group section.

12. The wind tunnel test device according to claim 1, characterized in that: The apparatus further comprises: at least one transition plate; At least one transition plate is provided between the tracer transition group segment and the wind control group segment; At least one of the transition plates is used to enhance the turbulent state of the second incoming wind field.

13. A method for applying to the wind tunnel test apparatus according to any one of claims 1 to 12, characterized in that: The method comprises: After the wind tunnel experiment begins, the tracer assembly of the tracer transition section is activated, and tracer particles are generated by the tracer assembly so that the tracer particles are mixed with the initial incoming wind field to obtain a first incoming wind field; After the first incoming wind field reaches the transition component of the tracer transition group section, the transition component converts the first incoming wind field from a laminar state to a turbulent state to obtain a second incoming wind field; After the second incoming wind field reaches the wind control group section, adjusting the rotation angles of the plurality of wind turbine components arranged in the array in a direction parallel to the supporting cross plate according to the first angle rotation strategy to obtain a first rotation angle combination of the wind turbine components, so that the second incoming wind field forms a first type of third incoming wind field under the action of the wind turbine components of the first rotation angle combination; After obtaining the third incoming wind field of the first type, according to the second angle rotation strategy, the rotation angles of the multiple wind turbine components arranged in the array are adjusted along the direction parallel to the supporting horizontal plate to obtain the second rotation angle combination of the wind turbine components, so that the third incoming wind field of the first type forms a third incoming wind field of the second type under the action of the wind turbine components of the second rotation angle combination.

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