Multi-physical field simulation device and control method

Abstract

The invention provides a multi-physics field simulation device and a control method.The multi-physics field simulation device comprises a ventilation wall frame and a plurality of different-diameter fan modules, and the different-diameter fan modules are arranged in the ventilation wall frame and can be rapidly and detachably installed in the ventilation wall frame; the different-diameter fan module comprises a front exhaust fan set formed by splicing a plurality of small-diameter fans and a rear exhaust fan set formed by splicing a plurality of large-diameter fans, and a gap layer is arranged between the air inlet face of the front exhaust fan set and the air outlet face of the rear exhaust fan set. Each different-diameter fan module is provided with a power source and a control module. A distributed air heat exchange array and an atomization humidification array which are used for adjusting an airflow temperature field and an airflow humidity field are mounted at an air inlet of the different-diameter fan module; a rectification box is installed on the air outlet face of the different-diameter fan module, and a sensor data acquisition system is installed on the air outlet face of the rectification box. And the air outlet side of the rectifier box is provided with a multi-physical field environment simulation test box.

Description

Technical Field

[0001] The present invention relates to the technical field of aerodynamic research, and in particular to a multi-physics field simulation device and a control method. Background Art

[0002] The application of wind tunnel testing in the field of unmanned aerial vehicles (UAVs) is crucial. It provides a scientific basis for the design, optimization and performance verification of UAVs by simulating the aerodynamic characteristics in real flight environments.

[0003] Common UAV test wind tunnels include recirculation wind tunnels, which consist of a power section (fan / compressor), a stabilization section, a contraction section, a test section, and a diffusion section. Recirculation wind tunnels can conduct both "open tests" and "closed tests." In open tests, the airflow is freely ejected in the test section, reducing interference from the tunnel walls, but at the expense of significant energy loss. In closed tests, the test section is enclosed on all four sides, resulting in a uniform flow field suitable for high-precision measurements. Recirculation wind tunnels offer advantages such as stable flow fields, low turbulence, high data reliability, and the ability to simulate continuous flight, making them suitable for long-term testing. However, they have high construction and maintenance costs, occupy a large area, and are unable to simulate dynamic, custom wind fields such as laminar flow.

[0004] A wind wall wind tunnel is an open-type wind tunnel, consisting of a matrix of dozens to hundreds of small axial-flow fans. Each fan is equipped with a drive motor on either side, and each drive motor can be individually controlled. By adjusting the fan speed, the desired wind speed is generated, thereby creating a different wind field. Traditional wind wall wind tunnels can dynamically control the output of each wind wall, but they have the following shortcomings: 1) Because they are composed of several small fans, the efficiency of converting electrical energy into air kinetic energy is low, and the system power is too high at high wind speeds. 2) Due to their open nature, there is a risk of errors between the wind field output and the expected value, and control accuracy is low. 2) Due to the large number of fans, partial failures may affect overall operation. 3) Because wind wall wind tunnels often require size adjustments and have specific requirements for the order of disassembly and assembly, hardware disassembly and assembly are cumbersome and require software customization and modification. 5) Single wind field control cannot simulate experimental environments with varying temperatures and humidity. Summary of the Invention

[0005] To overcome the shortcomings of the existing technology, the present invention proposes a multi-physics field simulation device and control method, which improves flexibility and scalability, facilitates maintenance, has high control accuracy, can efficiently convert energy, and the multi-physics field simulation is closer to the UAV flight environment.

[0006] The technical solution adopted in the present invention is: A multi-physics field simulation device includes a wind wall frame, a different-diameter fan module, a power supply and control module, a distributed air-heat exchange array, an atomizing humidification array, a rectifier box, a power supply and control system management box, a sensor data acquisition system, and a multi-physics field environment simulation test box. The different-diameter fan modules are provided in several groups and can be quickly disassembled and installed in the wind wall frame. The different-diameter fan modules include a front exhaust fan group assembled from several small-diameter fans and a rear exhaust fan group assembled from several large-diameter fans. A gap layer is provided between the air inlet surface of the front exhaust fan group and the air outlet surface of the rear exhaust fan group. Each of the different-diameter fan modules is equipped with a power supply and control system. module, the power supply and control module are respectively connected to the power supply and control system management box and the control system; a distributed air-heat exchange array for adjusting the air flow temperature field is embedded at the air inlet of the different-diameter fan module, and the atomizing humidification array is fixedly installed on the rear side of the distributed air-heat exchange array, and the distributed air-heat exchange array and the atomizing humidification array are both connected to the control system; a rectifier box is installed on the air outlet surface of the different-diameter fan module, and a sensor data acquisition system is installed on the air outlet surface of the rectifier box, and the sensor data acquisition system is communicatively connected to the control system; a multi-physical field environment simulation test box is installed on the air outlet side of the rectifier box.

[0007] Furthermore, the front exhaust fan group is composed of 4*4 fans, the rear exhaust fan group is composed of 2*2 fans, and the thickness of the gap layer is 1.0~1.5 times the diameter of the small diameter fan, preferably 1.2 times.

[0008] Furthermore, the diameter of the small-diameter fan is ≤10 cm, the diameter of the large-diameter fan is ≥15 cm, and the air volume ratio of the small-diameter fan to the large-diameter fan is 1:3~1:5.

[0009] Furthermore, the distributed air heat exchange array is composed of semiconductor refrigeration sheets, and the atomization and humidification array is composed of several groups of ultrasonic atomizers.

[0010] Furthermore, the power supply and control module are installed in the wind wall frame by inserting the slide rails and locking with lateral screws. The power socket and control socket are respectively provided. The control sockets are connected in series and connected to the control system through the CAN bus.

[0011] Furthermore, the wind wall frame is a grid-type frame, and the different-diameter fan modules are installed in a one-to-one correspondence with the grids of the grid-type frame and are fixed by bolts so as to be quickly assembled and disassembled.

[0012] Furthermore, the rectifier box includes a honeycomb and a damping net, the aperture of the honeycomb is less than 20% of the diameter of the small-diameter fan and greater than 12% of the diameter of the small-diameter fan, and the thickness of the honeycomb is 10 times the aperture.

[0013] Furthermore, the sensor data acquisition system includes a communication module and a sensor module, and the sensor module includes a wind speed sensor, a temperature sensor, and a humidity sensor.

[0014] Furthermore, the wind wall frame and rectifier box are both installed on the wind wall counterweight base, the power supply and control system management box is installed on one side of the wind wall frame, and casters with support bases are installed under the wind wall counterweight base.

[0015] The control method of the multi-physics field simulation device has the following specific steps: S1, the control system is connected to the power supply and control module through the serial port; S2: The control system enters the debugging mode. When the fan is running at idle speed, the output of the different-diameter fan modules is tested in turn to confirm the operating status and communication status of each fan. S3, after the debugging mode test is completed, enter the operation mode and edit the test task, including setting the type of wind field, whether to enable temperature field adjustment, and humidity field adjustment; S4, the controller in the control system initially issues wind field control instructions to each control module according to the set wind field, and uses PID control to adjust the corresponding control instructions according to the air pressure data collected by the sensor data acquisition system, thereby realizing closed-loop control of the wind field.

[0016] Beneficial effects of the present invention: (1) Flexibility and scalability: Modular wind walls can be quickly assembled and disassembled by adding or removing fan groups, adjusting the size and wind speed range, and starting and stopping specific fan groups on demand (for example, turning off half of the modules when the load is only 50%) to reduce standby power consumption. Wind speed uniformity in the experimental area can be achieved by dynamically adjusting the speed of each fan group (for example, increasing the speed of the edge group to compensate for the attenuation of the center), while the backflow type relies on mechanical adjustment of the guide vane.

[0017] (2) Maintenance convenience: The reflow type requires shutdown for fan or circuit maintenance; the modular design supports hot-swap replacement of faulty modules (e.g., replacing the power supply or control board only affects a single set of fans). It also features a highly modular design combining software and hardware, enabling rapid size adjustment and facilitating maintenance.

[0018] (3) High control accuracy. It adopts closed-loop control mode, and can make control adjustments based on sensor feedback information to accurately control the wind farm. It uses CAN protocol to output real-time speed instructions and status data. Each control board has a CRC check and retransmission mechanism to ensure that data synchronization is completed within 100ms.

[0019] (4) Modularized variable-diameter wind field simulation device: large fans provide basic flow, reducing overall power consumption, while small fans precisely control the local wind field. In low-speed mode, only the small fans rotate, which is sufficient to maintain the wind power segment index. In high-speed mode, the small fans supplement the wake area of ​​the large fans to avoid speed collapse (global wind speed difference ≤ 15%).

[0020] (5) Compared with traditional wind wall wind tunnels, the addition of honeycombs and damping nets can achieve wind field rectification and, based on multiple sets of tests, an empirical honeycomb design structure was obtained. The addition of a distributed air heat exchange array, a mist humidification array, and a multi-physics field environment simulation test chamber allows for the simulation of aircraft flight stability under different humidity and temperature environments. High energy conversion efficiency is achieved at high wind speeds.

[0021] (6) A sensor acquisition system is added to achieve closed-loop control, ensuring that the wind speed in the outlet test section meets the test environment requirements before testing. Furthermore, the wind field data can be closed-loop controlled in real time when responding to dynamically changing wind fields. This makes the output wind field more consistent with the expected wind field, improving control accuracy.

[0022] (7) The environmental chamber and wind wall wind tunnel are designed as a split unit, both of which are equipped with casters. Customers can adjust the distance between the environmental chamber and the wind wall wind tunnel according to the wind speed and environment, thereby adjusting the optimal control under different wind speeds. At the same time, the casters and detachable bracket design can increase the flexibility of the wind wall, making it easier to move and place it. After the position is determined, the bracket is installed to fix the wind wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is a structural schematic diagram of the present invention after the nine groups of different-diameter fan modules are installed on the wind wall frame.

[0025] Figure 3 It is a structural schematic diagram of the front exhaust fan group of the different-diameter fan module of the present invention.

[0026] Figure 4 It is a structural schematic diagram of the rear exhaust fan group of the different-diameter fan module of the present invention.

[0027] Figure 5 It is a structural schematic diagram of the rectifier of the present invention.

[0028] Figure 6 It is a structural schematic diagram of a single aperture of a honeycomb of the rectifier of the present invention.

[0029] Figure 7 It is a control flow diagram of the present invention.

[0030] In the figure: 1. Wind wall frame; 2. Different diameter fan module; 21. Small diameter fan; 22. Front exhaust fan group; 23. Large diameter fan; 24. Rear exhaust fan group; 3. Power supply and control module; 4. Rectifier box; 41. Honeycomb; 42. Damping net; 5. Power supply and control system management box; 6. Multi-physics field environment simulation test chamber; 7. Pressure sensor; 8. Wind wall counterweight base; 9. Casters; 10. Removable bracket; 11. TEC temperature adjustment module, 12. Atomization humidification module. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all possible alternatives, improvements and equivalents within the scope of the claims.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more, unless otherwise clearly defined.

[0033] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may also include the first and second features not being in direct contact but being in contact via another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or diagonally above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or diagonally below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] Reference Figure 1-6 , this embodiment provides a multi-physics field simulation device, including a wind wall frame 1, a different-diameter fan module 2, a power supply and control module 3, a distributed air-heat exchange array, an atomizing humidification array, a rectifier box 4, a power supply and control system management box 5, a sensor data acquisition system, and a multi-physics field environment simulation test box 6. The different-diameter fan module 2 is provided with several groups and can be quickly disassembled and installed in the wind wall frame 1. The different-diameter fan module 2 includes a front exhaust fan group 22 assembled from several small-diameter fans 21 and a rear exhaust fan group 24 assembled from several large-diameter fans 23. A gap layer is provided between the air inlet surface of the front exhaust fan group 22 and the air outlet surface of the rear exhaust fan group 24; each of the different-diameter fan modules Group 2 is equipped with a power supply and control module 3, and the power supply and control module 3 is respectively connected to the power supply and control system management box 5 and the control system; a distributed air-heat exchange array for adjusting the air flow temperature field is embedded in the air inlet of the different-diameter fan module 2, and the atomizing humidification array is fixedly installed on the rear side of the distributed air-heat exchange array, and the distributed air-heat exchange array and the atomizing humidification array are both connected to the control system; a rectifier box 4 is installed on the air outlet surface of the wind wall frame 1, and a sensor data acquisition system is installed on the air outlet surface of the rectifier box 4, and the sensor data acquisition system is communicatively connected to the control system; a multi-physical field environment simulation test box 6 is installed on the air outlet side of the rectifier box 4.

[0036] The different-diameter fan modules 2 described in this embodiment are provided with 9 groups, forming a power section, and the power section is 115 cm long and 115 cm wide. The front exhaust fan group 22 is composed of 4*4 fans, and the rear exhaust fan group 24 is composed of 2*2 fans. The thickness of the gap layer is 1.0~1.5 times the diameter of the small-diameter fan 21, preferably 1.2 times. That is. The large-diameter fan 23 has a larger blade area, which can further improve the energy utilization efficiency and reduce the total power consumption under the condition of generating the same wind speed. At the same time, taking into account the situation that the wind generated by the large-diameter fan 23 may cause the small-diameter fan 21 to stall, the distance between the air inlet surface of the front exhaust fan group 22 and the air outlet surface of the rear exhaust fan group 24 is 1.2 times the diameter of the small-diameter fan 21, so that the high-speed airflow of the large-diameter fan 23 is smoothly introduced into the suction area of ​​the small-diameter fan 21. Each fan unit adopts a standardized interface to support quick disassembly and position reorganization. The entire fan assembly is connected to the wind wall frame 1 on all sides with high-strength anti-loosening bolts and combined with rubber shock-absorbing gaskets to ensure overall rigidity while effectively suppressing resonance noise. The fans in the different-diameter fan module 2 are all high-performance, low-noise axial flow fans. The diameter of the small-diameter fan 21 is ≤10cm, the diameter of the large-diameter fan 23 is ≥15cm, and the air volume ratio of the small-diameter fan 21 to the large-diameter fan 22 is 1:3 to 1:5. Preferably, the diameter of the small-diameter fan 21 is 8cm, and the diameter of the large-diameter fan 23 is 16cm.

[0037] The distributed heat exchange array described in this embodiment is composed of a semiconductor refrigeration element (TEC). Specifically, a TEC temperature regulation module 11 is embedded in each fan inlet, regulating the airflow temperature field and enabling temperature control of the environmental chamber via a control system. Taking into account actual temperature requirements, the TEC provides a temperature range of -10°C to 80°C. A ceramic insulating sheet is placed between the TEC and the metal housing. The atomization and humidification array comprises several groups of atomization and humidification modules 12. Specifically, the atomization and humidification modules 12 utilize ultrasonic atomizers. This embodiment includes nine groups, each of which includes a 24MHz high-frequency atomizer head, an integrated water level sensor, and an automatic water-replenishing micro-pump. The TEC is fixed at least 20 cm behind each fan inlet to ensure sufficient evaporation of the water mist and avoid localized over-humidification. This generates and evaporates the water mist, enabling humidity and temperature control of the environmental chamber via a control system.

[0038] The power supply and control module 3 described in this embodiment is installed within the fan wall frame via slide rails and lateral screws, enabling quick assembly and disassembly. The power supply and control module 3 is provided with a power socket and a control socket, respectively. The control sockets are connected in series to the control system via the CAN bus, using the CAN bus to send control signals to all fans.

[0039] The wind wall frame 1 of this embodiment is a grid-type frame formed by welding iron sheets. The different-diameter fan modules 2 are installed in a one-to-one correspondence with the grids of the grid-type frame and are fixed by bolts so as to be quickly assembled and disassembled.

[0040] Combined with a control system that supports resizing, users can quickly disassemble and assemble the hardware and adjust the size with a single click on the software, achieving rapid size changes. Hardware expansion eliminates the need to consider fan group order, size, or shape. The control system can be used to set the group number and activation status of each fan group.

[0041] The rectifier box 4 in this embodiment includes a honeycomb 41 and a damping mesh 42. The aperture of the honeycomb 41 is less than 20% of the diameter of the small-diameter fan and greater than 12% of the diameter of the small-diameter fan. The aperture within this range has a good turbulent effect. The thickness of the honeycomb is 10 times the aperture, which is suitable for wind wall wind tunnels with wind speeds below 16m / s. It has the best rectification effect and can rectify the uneven wind field blown by the turbofan into a stable laminar flow. At the end of the rectifier box, i.e., the test section, a sensor data acquisition system is used to sample the wind speed and transmit the sampled data back to the control system to achieve closed-loop control.

[0042] The sensor data acquisition system described in this embodiment includes a communication module and a sensor module. The sensor module includes a wind speed sensor, a temperature sensor, and a humidity sensor. Specifically, the wind speed sensor uses a pressure sensor 7, and wind speed is measured using a Pitot tube wind measurement system. The sensors are evenly distributed across the test section and supported by a cantilever. A silicone shock-absorbing ring is added to the base of the cantilever, and a 5mm margin is reserved for the wires to prevent the risk of wire breakage caused by wind tunnel vibration. After exiting the sensor group, the power and signal cables are routed through the cantilever tube (a carbon fiber tube with 1mm×2mm slots) and into a junction box on the side wall of the wind tunnel. The junction box is equipped with a waterproof aviation plug (such as a GX16-4 pin), facilitating quick assembly and disassembly. The communication module transmits the collected data back to the control system as wind farm feedback data, enabling precise wind farm control.

[0043] In this embodiment, the wind wall frame 1 and rectifier box 4 are both mounted on a wind wall counterweight base 8. The power and control system management box 5 is mounted on one side of the wind wall frame 1. Casters 9 with support bases are installed under the wind wall counterweight base 8 to increase the overall weight of the wind wall and enhance its anti-slip ability. A detachable bracket 10 is also provided to prevent the wind wall from becoming unstable and moving when blowing high-speed wind.

[0044] The multi-physics field environment simulation test box 6 of this embodiment is composed of a transparent acrylic plate with an anti-reflective film. After adjusting the wind speed, humidity, and temperature, a plurality of sets of adjustable physical elements are generated in the multi-physics field environment simulation test box 6.

[0045] The control method of the multi-physics field simulation device of the present invention comprises the following specific steps: S1, the control system is connected to the power supply and control module through the serial port; the instructions sent are sent to all fans at once through the CAN bus communication mode, and wind tunnel feedback information is received.

[0046] S2: The control system enters the debugging mode. When the fan is running at idle speed, the output of 9 sets of different-diameter fan modules is tested in turn to confirm the operating status and communication status of each fan. S3, when the debugging mode test is completed, enter the operation mode and edit the test task, including the type setting of the wind field, whether to enable temperature field adjustment, humidity field adjustment, etc.; for example, common basic wind fields include uniform laminar flow, shear wind field, time-varying wind field, gusts, and turbulence; at the same time, you can also generate a custom wind field through function input. The user will give a preliminary wind field instruction based on the required wind field and the built-in wind speed-control instruction calibration table, and issue a wind field control instruction. To ensure the accuracy of wind field control, the user can choose whether to send at a fixed frequency and specify the sending frequency. If you do not select fixed frequency sending, it means that the control instruction is only sent once. If you select fixed frequency sending, it means that the control instruction is sent at the specified frequency.

[0047] In step S4, the controller in the control system initially issues wind farm control instructions to each control module based on the set wind farm. Based on the air pressure data collected by the sensor data acquisition system, the controller uses PID control to adjust the corresponding control instructions, thereby achieving closed-loop control of the wind farm. For example, if the sampled wind speed is lower than the expected wind speed, the wind speed control variable is increased by 0.1 m / s according to the calibration. If the sampled wind speed is higher than the expected wind speed, the wind speed control variable is decreased by 0.1 m / s according to the calibration.

[0048] The control system also includes a status monitoring part, which monitors the wind turbine operating status, wind turbine fault status, and sensor operating status. Users can accurately control the wind farm based on the monitoring information.

[0049] This invention offers flexibility and scalability. The modular wind wall can be quickly assembled and disassembled by adding or removing fan groups, adjusting size and wind speed range. Specific fan groups can be started and stopped on demand (for example, shutting down half the modules at 50% load), reducing standby power consumption. Wind speed uniformity in the experimental area can be achieved by dynamically adjusting the speed of each fan group (for example, increasing the speed of edge groups to compensate for central attenuation), while the recirculation type relies on mechanical adjustment of guide vanes. Maintenance is also convenient. While the recirculation type requires downtime for fan or circuit maintenance, the modular design supports hot-swappable replacement of faulty modules (for example, replacing the power supply or control board only affects a single fan group). The highly modular nature of hardware and software integration allows for rapid size adjustment and facilitates maintenance. High control accuracy is achieved through closed-loop control, which uses feedback from various sensors to precisely control the wind farm. The CAN protocol is used to output real-time speed commands and status data, and each control board includes a CRC check and retransmission mechanism to ensure data synchronization within 100ms. This modular, variable-diameter wind farm simulation device allows large fans to provide base flow, reducing overall power consumption, while small fans precisely control the local wind farm. In low-speed mode, only the small fan rotates, sufficient to maintain wind speed performance. In high-speed mode, the small fan supplements the large fan's wake to prevent velocity collapse (global wind speed difference ≤ 15%). Compared to traditional wind wall wind tunnels, the addition of honeycombs and damping meshes achieves wind field rectification. The honeycomb design structure was empirically developed based on multiple tests. The inclusion of a distributed air-heat exchange array, a mist humidification array, and a multi-physics environmental simulation chamber enhances the flight stability of the simulated aircraft under varying humidity and temperature conditions. Energy conversion efficiency is high at high wind speeds. A sensor acquisition system implements closed-loop control, ensuring that the wind speed at the outlet test section meets the test environment requirements before testing. Furthermore, real-time closed-loop control of wind field data is enabled to cope with dynamically changing wind fields. This ensures that the output wind field more closely matches the expected wind field, improving control accuracy. The environmental chamber and wind wall wind tunnel are designed as separate units, both equipped with casters. Customers can adjust the distance between the environmental chamber and wind wall wind tunnel according to varying wind speeds and environmental conditions, thereby optimizing control at varying wind speeds. At the same time, the casters and detachable bracket design can increase the mobility of the wind wall, making it easier to move and place it. After determining the position, install the bracket to fix the wind wall.

Claims

1. A multi-physics field simulation device, comprising a wind wall frame, different-diameter fan modules, a power supply and control module, a distributed air-heat exchange array, an atomizing humidification array, a rectifier box, a power supply and control system management box, a sensor data acquisition system, and a multi-physics field environment simulation test chamber. The different-diameter fan modules are provided in groups and can be quickly assembled and disassembled within the wind wall frame. The device is characterized by: The different-diameter fan module includes a front exhaust fan group assembled from several small-diameter fans and a rear exhaust fan group assembled from several large-diameter fans, and a gap layer is provided between the air inlet surface of the front exhaust fan group and the air outlet surface of the rear exhaust fan group; each of the different-diameter fan modules is configured with a power supply and control module, and the power supply and control module are respectively connected to the power supply and control system management box and the control system; a distributed air-heat exchange array for adjusting the air flow temperature field is embedded and installed at the air inlet of the different-diameter fan module, and the atomizing and humidifying array is fixedly installed on the rear side of the distributed air-heat exchange array, and the distributed air-heat exchange array and the atomizing and humidifying array are both connected to the control system; a rectifier box is installed on the air outlet surface of the different-diameter fan module, and a sensor data acquisition system is installed on the air outlet surface of the rectifier box, and the sensor data acquisition system is communicatively connected to the control system; a multi-physical field environment simulation test box is installed on the air outlet side of the rectifier box.

2. A multi-physics field simulation device according to claim 1, characterized in that: The front exhaust fan group is composed of 4*4 fans, the rear exhaust fan group is composed of 2*2 fans, and the thickness of the gap layer is 1.0~1.5 times the diameter of the small-diameter fan.

3. A multi-physics field simulation device according to claim 1, characterized in that: The diameter of the small-diameter fan is ≤10 cm, the diameter of the large-diameter fan is ≥15 cm, and the air volume ratio of the small-diameter fan to the large-diameter fan is 1:3~1:

5.

4. A multi-physics field simulation device according to claim 1, characterized in that: The distributed air heat exchange array is composed of semiconductor refrigeration sheets, and the atomization and humidification array is composed of several groups of ultrasonic atomizers.

5. A multi-physics field simulation device according to any one of claims 1 to 4, characterized in that: The power supply and control module are installed in the wind wall frame by inserting the slide rails and locking them with lateral screws. The power socket and control socket are respectively provided. The control sockets are connected in series and connected to the control system through the CAN bus.

6. A multi-physics field simulation device according to claim 5, characterized in that: The wind wall frame is a grid-type frame, and the different-diameter fan modules are installed in a one-to-one correspondence with the grids of the grid-type frame and are fixed by bolt connection so as to be quickly assembled and disassembled.

7. A multi-physics field simulation device according to claim 6, characterized in that: The rectifier box includes a honeycomb and a damping net. The aperture of the honeycomb is less than 20% of the diameter of the small-diameter fan and greater than 12% of the diameter of the small-diameter fan. The thickness of the honeycomb is 10 times the aperture.

8. A multi-physics field simulation device according to claim 7, characterized in that: The sensor data acquisition system includes a communication module and a sensor module. The sensor module includes a wind speed sensor, a temperature sensor, and a humidity sensor.

9. A multi-physics field simulation device according to claim 8, characterized in that: The wind wall frame and the rectifier box are both installed on the wind wall counterweight base, the power supply and control system management box is installed on one side of the wind wall frame, and casters with a support base are installed under the wind wall counterweight base.

10. The control method of the multi-physics field simulation device according to any one of claims 1 to 9, comprising the following steps: S1, the control system is connected to the power supply and control module through the serial port; S2: The control system enters the debugging mode. When the fan is running at idle speed, the output of the different-diameter fan modules is tested in turn to confirm the operating status and communication status of each fan. S3, after the debugging mode test is completed, enter the operation mode and edit the test task, including setting the type of wind field, whether to enable temperature field adjustment, and humidity field adjustment; S4, the controller in the control system initially issues wind field control instructions to each control module according to the set wind field, and uses PID control to adjust the corresponding control instructions according to the air pressure data collected by the sensor data acquisition system, thereby realizing closed-loop control of the wind field.

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