A multifunctional wind tunnel simulation device
By designing a multifunctional wind tunnel simulation device, the structural stress under wind and rain coupling conditions was realistically reproduced, solving the problem that existing devices cannot simulate wind and rain coupling, providing a stable wind environment and a controllable rainfall system, and breaking through the limitation of fixed wind direction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHIJIAZHUANG TIEDAO UNIV
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-21
AI Technical Summary
Existing transportation infrastructure testing devices can only simulate single wind or rain disaster environments and cannot accurately reproduce the structural stress under wind-rain coupling conditions. In particular, the simulation of wind direction angle adjustment is difficult to achieve, and the coupled resonance effect of aerodynamics and hydrodynamics under wind-rain coupling is ignored.
A multifunctional wind tunnel simulation device was designed, comprising a ring-shaped wind tunnel body, a power fan, a rainfall module, and a rotating platform. Through coordinated control unit, it can achieve 360° wind direction angle adjustment and accurate simulation of wind and rain coupling environment. Combined with pressure sensor, it can control wind speed, rain intensity, and wind direction angle in real time to simulate the real wind and rain coupling process.
It achieves realistic reproduction of structural stress under wind and rain coupling conditions, breaks through the limitation of fixed wind direction, and can accurately reproduce time-varying wind fields and multi-angle alternating loads in strong winds, providing a stable wind environment and controllable rainfall system to simulate extreme wind and rain coupling scenarios.
Smart Images
Figure CN224535362U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of disaster simulation test devices for transportation infrastructure, and in particular to a wind tunnel simulation device with wind and rain coupling function. Background Technology
[0002] Against the backdrop of global warming and frequent extreme weather events, strong winds and torrential rains occur frequently. Under strong winds, critical bridge components such as main beams and towers can vibrate violently or even flutter. Sudden changes in wind direction exacerbate the risk, causing a momentary imbalance in the bridge's stress levels, leading to intensified vibrations and component fatigue. The combined effects of wind and rain further aggravate the impact of extreme weather on transportation infrastructure, directly jeopardizing traffic safety.
[0003] Currently, existing testing devices for transportation infrastructure are only suitable for simulating single-factor environments such as wind or rain disasters, studying the structural stress state under a fixed wind angle. They lack the capability for simulating environments with multi-factor coupling of wind and rain, neglect the impact of coupled resonance between aerodynamic and hydrodynamic forces on structural instability under the combined effects of wind and rain, and are even more difficult to simulate wind angle adjustments during wind-rain coupling. These problems make it difficult to realistically reproduce the structural stress under wind-rain coupling. Utility Model Content
[0004] To overcome the shortcomings of the prior art, this application provides a multifunctional wind tunnel simulation device.
[0005] The multifunctional wind tunnel simulation device provided in this application adopts the following technical solution: A multifunctional wind tunnel simulation device includes a ring-shaped wind tunnel body and a collaborative control unit. The wind tunnel body is equipped with a power fan, a rainfall module and a rotating platform. The rainfall module includes a water storage tank and a pre-swirl nozzle array connected in series. The rotating platform is used to support a building model. The power fan, the pre-swirl nozzle array and the rotating platform are all electrically connected to the collaborative control unit.
[0006] By adopting the above technical solution, the power fan is used to provide airflow to create a stable airflow pattern within the wind tunnel, the rain module is used to accurately simulate the wind-rain coupling environment, and the rotating platform is used to support the building model and achieve 360° wind direction adjustment. Through the coordinated control unit, the power fan, rain module, and rotating platform are coordinated and controlled to realistically reproduce the stress state of transportation infrastructure during wind-rain extreme weather processes, and reveal the mechanism of disasters occurring in transportation infrastructure under the wind-rain coupling effect.
[0007] A further technical solution is that the wind tunnel body includes a guide tube, a stabilizing section, a contraction section, a test section, a diffusion section, and a recirculation section connected in sequence, and the rainfall module and the rotating platform are both located in the test section.
[0008] By adopting the above technical solution, the wind tunnel body guides the initial direction of the airflow through the guide tube, accelerates the airflow to the wind speed required for the test through the stabilization section and then the contraction section. The test is carried out in the core test section where the rain module and the rotating platform are installed. Then, the airflow speed is reduced by the diffusion section to reduce energy loss. Finally, the guide vanes of the return section suppress the corner vortex to achieve airflow circulation, thereby constructing a stable and controllable airflow environment.
[0009] A further technical solution is that a test bench is provided in the stable section, and the test bench is provided with slots, and the rotating table is embedded in the slots.
[0010] By adopting the above technical solution, the platform of the rotating stage protrudes to the upper part of the test platform, and the fixed test platform can provide side protection for the rotating stage, preventing airflow from impacting the side of the rotating stage and causing the building model to overturn.
[0011] A further technical solution is that a cell is provided at the upstream port of the stabilization segment; and a damping mesh is provided at the downstream port of the stabilization segment.
[0012] By adopting the above technical solution, setting up honeycomb elements and damping nets in the stable section can divide the airflow into columnar shapes. After the airflow leaves the honeycomb elements and damping nets, the turbulent vortices will be attenuated, and the airflow will stabilize, providing a stable wind foundation for subsequent building model testing.
[0013] A further technical solution is that a guide vane is provided at the corner of the recirculation section.
[0014] By adopting the above technical solution, the air guide vane is used to prevent airflow obstruction caused by vortices at bends, and to reduce energy consumption and noise.
[0015] A further technical solution is that multiple pressure sensors are installed on the rotating platform, and the pressure sensors are evenly arranged on the side of the rotating platform; the sensors are electrically connected to the collaborative control unit.
[0016] By adopting the above technical solution, pressure sensors evenly arranged on the side of the rotating platform can measure dynamic wind pressure at different angles and transmit the data to the collaborative control unit in real time for dynamic parameter adjustment. At the same time, real-time acquisition of wind pressure data is realized. The collaborative control unit establishes a dynamic mapping relationship of real-time matching model of wind speed-rain intensity-rotation angle based on the pressure sensor data. It operates according to the parameter control logic of adjusting the speed of the power fan to control the wind speed, adjusting the water pressure of the nozzle to control the rain intensity, and driving the rotating platform to rotate to adjust the angle between the model and the wind direction, thereby realizing the coupling of various factors.
[0017] Compared with the prior art, this application includes the following beneficial technical effects: This application breaks through the limitations of traditional fixed test benches by using a 360° rotating test bench to overcome the fixed wind direction limitation and accurately reproduce time-varying wind fields and multi-angle alternating loads in strong winds; and generates a real wind and rain coupled environment by using a controllable rainfall system in conjunction with the wind field to reproduce extreme wind and rain coupled fields. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall internal structure of an embodiment of this application; Figure 2 This is a schematic diagram of the pre-swirl nozzle array in an embodiment of this application; Figure 3 This is a schematic diagram of the structure of the power fan according to an embodiment of this application; Figure 4 This is a schematic diagram of the overall external structure of an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the test bench in an embodiment of this application.
[0019] Reference numerals: 11. Power fan; 12. Rainfall module; 121. Water storage tank; 122. Pre-swirl nozzle array; 13. Rotating platform; 21. Guide tube; 22. Stabilizing section; 23. Contraction section; 24. Test section; 25. Diffusion section; 26. Recirculation section; 27. Variable frequency drive system; 28. Cooperative control unit; 31. Test bench; 32. Slot; 41. Honeycomb unit; 42. Damping net; 43. Guide vane; 44. Pressure sensor. Detailed Implementation
[0020] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0021] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "setup," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0023] The technical solutions in this application will be further described in detail below with reference to the accompanying drawings.
[0024] This application discloses a multifunctional wind tunnel simulation device. Please refer to... Figure 1 The device includes a ring-shaped wind tunnel body and a collaborative control unit. The wind tunnel body houses a power fan 11, a rainfall module 12, and a rotating platform 13. The rainfall module 12 includes a connected water storage tank 121 and a pre-swirl nozzle array 122. The structure of the pre-swirl nozzle array 122 is as follows: Figure 2 As shown. The rotating platform 13 is used to support the building model, and the power fan 11, the pre-rotating nozzle array 122, and the rotating platform 13 are all electrically connected to the cooperative control unit 28.
[0025] The water storage tank 121 stores water to provide a water source for the rainfall function of the pre-swirl nozzle array 122. The power fan 11 is connected to the coordination control unit 28 via a frequency converter drive system 27. By adjusting the impeller speed of the power fan 11, the wind speed is precisely controlled, providing a controllable wind field for the wind tunnel. The structure of the power fan 11 is as follows... Figure 3 As shown.
[0026] In practice: the coordinated control unit controls the start-up of the power fan 11, the pre-swirl nozzle array 122 and the rotating platform 13. The power fan 11 generates wind force and acts on the building model. The wind force circulates within the wind tunnel. The pre-swirl nozzle array 122 sprays water droplets to simulate rain, which, in conjunction with the wind force, simulates typhoon and rainstorm. The rotating platform 13 rotates horizontally to control the angle between the building model and the wind direction.
[0027] As can be seen from the above structure and specific implementation process, the pre-rotating nozzle array 122 can give raindrops a horizontal tangential initial velocity. After being accelerated by the wind in the wind tunnel, it matches the mainstream wind speed and can reproduce the kinematic characteristics of raindrops in typhoon rainstorms. The rotating platform 13 rotates and drives the building model to rotate horizontally, which can reproduce the dynamic wind pressure distribution characteristics of the building side under different wind attack angles, thereby simulating the building's bearing state in a near-real wind and rain environment.
[0028] In some embodiments, the wind tunnel body 11 includes a guide tube 21, a stabilizing section 22, a contraction section 23, a test section 24, a diffusion section 25, and a recirculation section 26 connected in sequence, such as Figure 1 or Figure 4 As shown. The pre-swirl nozzle array 122 and the rotating platform 13 are both located within the test section 24.
[0029] After the power fan 11 is started, the airflow enters the stabilization section 22 through the guide tube 21. After the airflow is uniformly distributed in the stabilization section 22, it enters the contraction section 23, which can accelerate the airflow to the speed required in the test section 24. The airflow enters the diffusion section 25 from the test section 24, which can reduce the energy loss of the return flow. It enters the power fan 11 through the return section 26 to form a circulating wind.
[0030] In some embodiments, a honeycomb element 41 is provided at the upstream port of the stabilization section 22, and a damping net 42 is provided at the downstream port of the stabilization section 22. When wind enters the stabilization section 22 from the guide tube 21, it creates significant turbulence, which affects the stability of the airflow. The honeycomb element 41 and damping net 42 in the stabilization section 22 can divide the airflow into columnar sections. As the airflow exits from the honeycomb element 41 and damping net 42, the turbulent vortices are attenuated, stabilizing the airflow and providing a stable wind foundation for subsequent building model testing.
[0031] Furthermore, a guide vane 43 is provided at the corner within the return flow section 26. The guide vane 43 is used to prevent airflow obstruction caused by vortices at the bend, thereby reducing energy consumption and noise.
[0032] In some embodiments, a test bench 31 is fixedly installed within the stabilizing section 22, and the test bench 31 has a slot 32. The rotating table 13 is embedded in the slot 32. Figure 5 As shown.
[0033] The slot 32 faces upward. After the rotating platform 13 is inserted into the slot 32, its platform protrudes to the upper part of the test platform 31. The fixed test platform 31 can provide side protection for the rotating platform 13, preventing airflow from impacting the side of the rotating platform 13 and causing the building model to overturn.
[0034] In some embodiments, a plurality of pressure sensors 44 are mounted on the rotating table 13, and the pressure sensors 44 are evenly arranged on the side of the rotating table 13 that protrudes from the test bench 31; the pressure sensors 44 are electrically connected to the cooperative control unit.
[0035] The collaborative control unit is a programmable logic controller or a computer. When the rotating platform 13 rotates, the wind pressure pulsation signal at each rotation angle can be collected by the pressure sensor 44. The collaborative control unit establishes a dynamic mapping relationship between wind speed, rainfall intensity and rotation angle based on the fiber optic-BIM hybrid sensor network to achieve phase matching of the three elements.
[0036] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.
[0037] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A multifunctional wind tunnel simulation device, characterized in that, The wind tunnel includes a ring-shaped main body and a collaborative control unit. The main body of the wind tunnel is equipped with a power fan (11), a rainfall module (12) and a rotating platform (13). The rainfall module (12) includes a water storage tank (121) and a pre-rotating nozzle array (122) connected to each other. The rotating platform (13) is used to support the building model. The power fan (11), the pre-rotating nozzle array (122) and the rotating platform (13) are all electrically connected to the collaborative control unit (28).
2. The multifunctional wind tunnel simulation device according to claim 1, characterized in that, The wind tunnel body includes a guide tube (21), a stabilizing section (22), a contraction section (23), a test section (24), a diffusion section (25), and a recirculation section (26) connected in sequence. The pre-swirl nozzle array (122) and the rotating table (13) are both located in the test section (24).
3. The multifunctional wind tunnel simulation device according to claim 2, characterized in that, The test section (24) is equipped with a test bench (31), and the test bench (31) is provided with a slot (32), and the rotating table (13) is embedded in the slot (32).
4. The multifunctional wind tunnel simulation device according to claim 2, characterized in that, The upstream port of the stabilizing section (22) is provided with a cell (41); the downstream port of the stabilizing section (22) is provided with a damping mesh (42).
5. A multifunctional wind tunnel simulation device according to claim 2, characterized in that, A guide vane (43) is provided at the corner of the return section (26).
6. The multifunctional wind tunnel simulation device according to claim 3, characterized in that, Multiple pressure sensors (44) are installed on the rotating platform (13), and the pressure sensors (44) are evenly arranged on the side of the rotating platform (13); the pressure sensors (44) are electrically connected to the cooperative control unit (28).