Small wind tunnel simulation device

Abstract

The utility model provides a small wind tunnel simulation device. The small wind tunnel simulation device comprises a shell, a liquid mist generator which is arranged at the first end of the shell in the length direction and used for generating liquid mist, a front rectifying part which is located between the two ends of the shell in the length direction and is close to the liquid mist generator, and an exhaust fan which is arranged at the second end of the shell in the length direction. The area, located between the front rectifying piece and the exhaust fan, in the shell is a flow field simulation area. According to the small wind tunnel simulation device, the liquid mist generator is used as a flow visualization tool of the small wind tunnel simulation device, so that internal flow field change visualization observation and analysis can be realized, and meanwhile, humidified air can be provided to the outside.

Description

Technical Field

[0001] This application relates to the field of wind tunnel technology, and more particularly to a small wind tunnel simulation device. Background Technology

[0002] Small wind tunnel simulation devices are generally used to simulate aerodynamic characteristics and fluid flow behavior. They are widely used in education, scientific research, and product development to test and analyze the performance of objects in airflow within a controlled environment.

[0003] Existing small-scale wind tunnel simulation devices generally use electronic smoke generators as flow visualization tools. By energizing the internal resistor of the electronic smoke generator, the internal e-liquid is heated and converted into smoke, thereby allowing observation and analysis of airflow characteristics.

[0004] However, the small wind tunnel simulation device using electronic cigarette generators has the following problems: (1) The e-liquid consumables are easily consumed and the cost of use is high. (2) The emitted smoke will be inhaled by the user and will have an adverse effect on the user's health, and will also pollute the surrounding environment. (3) Continuous use is prone to high failure rate due to overheating of the electronic cigarette generator. Utility Model Content

[0005] This application provides a small wind tunnel simulation device to solve at least one of the problems of existing wind tunnel simulation devices, such as easy consumption of e-liquid and high operating costs, impact on human health and the surrounding environment, and high failure rate.

[0006] This application provides a small wind tunnel simulation device, including: a shell, with the two ends of the shell along its length being a first end and a second end, respectively; a liquid mist generator for generating liquid mist, disposed at the first end of the shell; a front rectifier located between the first end and the second end of the shell and close to the liquid mist generator; and an exhaust fan disposed at the second end of the shell; wherein the area inside the shell between the front rectifier and the exhaust fan is a flow field simulation area.

[0007] In one possible implementation, the bottom wall of the housing is provided with a first liquid storage tank, and the liquid mist generator includes an oscillating plate disposed at the bottom of the first liquid storage tank; the oscillating plate is used to generate surface tension waves in the liquid in the first liquid storage tank under the action of a high-frequency electrical signal, so as to atomize the liquid into liquid mist.

[0008] In one possible implementation, a second liquid storage tank is provided on the bottom wall of the shell, and the second liquid storage tank is connected to the first liquid storage tank; the small wind tunnel simulation device also includes a liquid supply tank, which is provided on the shell, and the liquid outlet of the liquid supply tank is connected to the second liquid storage tank.

[0009] In one possible implementation, the liquid supply tank extends along the length of the housing.

[0010] In one possible implementation, the bottom wall of the shell is further provided with a third liquid storage tank, which is connected to the second liquid storage tank, and a water level detector is provided in the third liquid storage tank.

[0011] In one possible implementation, it further includes: a flow guide, disposed at the first end of the housing and connected to the liquid mist generator; the mist outlet side of the flow guide faces the front rectifier, and a plurality of mist outlet nozzles are provided on the mist outlet side.

[0012] In one possible implementation, the flow guide includes: a docking portion covering the mist outlet area of ​​the liquid mist generator; a flow guide connected to the top of the docking portion and communicating with the docking portion; the side of the flow guide facing the front rectifier is the mist outlet side.

[0013] In one possible implementation, the diffuser further includes an air outlet, which is disposed on the side of the diffuser away from the front rectifier and is connected to the diffuser.

[0014] The small wind tunnel simulation device also includes a blower, which is located at the first end of the housing, and the blower's outlet is connected to the air outlet section.

[0015] In one possible implementation, the housing includes a main housing and a transparent door, with an observation port in the flow field simulation area of ​​the main housing and the transparent door covering the observation port.

[0016] In one possible implementation, the small wind tunnel simulation device further includes a rear rectifier located between the first and second ends of the housing, and positioned close to the exhaust fan.

[0017] The small wind tunnel simulation device provided in this application includes: a shell, a liquid mist generator disposed at a first end along the length of the shell for generating liquid mist, a front rectifier located between the two ends along the length of the shell and close to the liquid mist generator, and an exhaust fan disposed at a second end along the length of the shell. The region within the shell located between the front rectifier and the exhaust fan is the flow field simulation region.

[0018] This configuration uses a liquid mist generator to visualize the flow in the small wind tunnel simulation device, replacing the electronic smoke generator used in the original small wind tunnel simulation device. Under the action of the exhaust fan, the liquid mist generated by the liquid mist generator located at the first end of the shell flows through the front rectifier to the flow field simulation area and finally flows out of the second end of the shell through the exhaust fan. This not only enables the visualization and analysis of internal flow field changes, but also provides humidified air to the outside. This solves the problems of high cost and easy consumption of consumables, impact on human health and the surrounding environment, and high failure rate due to overheating caused by the use of electronic smoke generators in the prior art. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A three-dimensional structural diagram of the small wind tunnel simulation device provided in the embodiments of this application from one perspective;

[0021] Figure 2 An exploded view of the small wind tunnel simulation device provided in the embodiments of this application;

[0022] Figure 3 A connection diagram of the small wind tunnel simulation device provided in an embodiment of this application from another perspective;

[0023] Figure 4 A cross-sectional view of the small wind tunnel simulation device provided in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of the flow guide provided in an embodiment of this application at one angle;

[0025] Figure 6 This is a schematic diagram of the flow guide provided in an embodiment of this application from another angle;

[0026] Figure 7 This is a partial structural diagram of the housing provided in an embodiment of the present application from one viewpoint;

[0027] Figure 8 This is a partial structural schematic diagram of the housing provided in an embodiment of this application from another perspective.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100 - Housing; 110 - Main housing; 111 - First liquid storage tank; 112 - Second liquid storage tank; 1121 - Communicating protrusion; 113 - Third liquid storage tank; 1131 - Water level detector; 114 - Observation port; 115 - Power knob; 116 - Cover plate; 120 - Transparent door;

[0030] 200 - Liquid mist generator; 210 - Vibrating plate;

[0031] 300 - Flow guide; 310 - Connecting part; 320 - Flow guide; 3201 - Mist nozzle; 3202 - Partition plate; 330 - Air outlet;

[0032] 400-Supply Tank;

[0033] 500-front rectifier;

[0034] 600-exhaust fan;

[0035] 700 - Blower; 710 - Connecting structure. Detailed Implementation

[0036] A small wind tunnel simulator is a device used to observe and analyze aerodynamic properties. It is widely used in education, scientific research, and product development. For example, it can be used as a teaching tool to analyze changes in the flow field of objects in airflow. It can also be used as a recreational product to observe the behavior of vehicle models in fluids.

[0037] Existing small-scale wind tunnel simulation devices typically employ the smoke flow method to help observe and analyze airflow characteristics. Specifically, by generating visualized smoke through an internal electronic smoke generator, the flow path, eddies, and separation points of the airflow in the test section can be directly observed to understand complex fluid behavior. Simultaneously, the smoke flow can reveal eddies and flow separation phenomena near the surface of an object, allowing for optimization of the object's aerodynamic design. Furthermore, by observing the shape and changes in the smoke flow, characteristics such as airflow velocity distribution and pressure variations can be analyzed.

[0038] However, the smoke flow method has the following problems:

[0039] (1) E-liquid consumables need to be purchased separately, which is costly and inconvenient.

[0040] (2) The smoke produced by the e-liquid will be distributed in the surrounding air after being discharged from the device. If inhaled by the user, it will be detrimental to health and will also affect the surrounding environment, causing certain environmental pollution.

[0041] (3) The smoke generator heats the e-liquid by passing electricity through an internal resistor, which then converts it into smoke. Continuous use can easily cause the smoke generator to overheat and shut down, resulting in a high failure rate.

[0042] (4) The e-liquid is consumed quickly after startup, requiring frequent refills, which is inconvenient to use.

[0043] In view of this, this application provides a small wind tunnel simulation device, including: a housing, a liquid mist generator disposed at a first end along the length of the housing for generating liquid mist, a front rectifier located between the two ends along the length of the housing and close to the liquid mist generator, and an exhaust fan disposed at a second end along the length of the housing. The region within the housing located between the front rectifier and the exhaust fan is the flow field simulation region.

[0044] This configuration uses a liquid mist generator to visualize the flow in the small wind tunnel simulation device, replacing the electronic smoke generator used in the original small wind tunnel simulation device. Under the action of the exhaust fan, the liquid mist generated by the liquid mist generator located at the first end of the shell flows through the front rectifier to the flow field simulation area and finally flows out of the second end of the shell through the exhaust fan. This not only enables the visualization and analysis of internal flow field changes, but also provides humidified air to the outside. This solves the problems of high cost and easy consumption of consumables, impact on human health and the surrounding environment, and high failure rate due to overheating caused by the use of electronic smoke generators in the prior art.

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Figure 1 A three-dimensional structural diagram of the small wind tunnel simulation device provided in the embodiments of this application from one perspective. Figure 2 An exploded view of the structure of the small wind tunnel simulation device provided in the embodiments of this application.

[0047] Reference Figure 1 and Figure 2 As shown, this application embodiment provides a small wind tunnel simulation device, including a housing 100, a liquid mist generator 200, a front rectifier 500, and an exhaust fan 600. The housing 100 has a first end and a second end along its length, respectively. The liquid mist generator 200, the front rectifier 500, and the exhaust fan 600 are all disposed within the housing 100. The liquid mist generator 200 is located at the first end of the housing 100. The front rectifier 500 is located between the first and second ends of the housing 100 and is positioned close to the liquid mist generator 200. The exhaust fan 600 is located at the second end of the housing 100. The region within the housing 100 between the front rectifier 500 and the exhaust fan 600 forms a flow field simulation zone.

[0048] In some embodiments, the housing 100 includes a main housing 110 and a transparent door 120. It is understood that the main housing 110 may be assembled from multiple sub-housing units, and this is not limited thereto. The main housing 110 has an observation port 114 in the flow field simulation area. The transparent door 120 covers the observation port 114. Thus, when flow field simulation of the model is required, the model can be placed in the flow field simulation area by opening the transparent door 120, and the flow field changes inside the simulation area can be observed through the observation port 114. It is understood that the housing 100 may also include a cover plate 116, which may be embedded in the first end of the main housing 110. Specifically, the cover plate 116 may be configured as a mesh structure, allowing outside air to enter the interior of the main housing 110 through the mesh openings, while also preventing other external substances from entering the housing 100 when the exhaust fan is activated.

[0049] The liquid mist generator 200 provides liquid mist for a small wind tunnel simulation device as a flow field visualization medium. The front rectifier 500 can be a rectifier plate fixedly mounted on the main housing 110. The rectifier plate can be made of materials such as metal or plastic and has a grid structure with specific aperture and thickness to effectively reduce the degree of turbulence entering the flow field simulation zone, eliminate non-uniformity and vortices in the liquid mist, correct the direction of the liquid mist and ensure that it flows parallel to the length of the housing 100, thereby ensuring that the liquid mist in the flow field simulation zone can flow uniformly and stably to the second end. The exhaust fan 600 can extract the air and liquid mist in the flow field simulation zone to the outside.

[0050] It should be noted that the liquid mist generator 200 can be an ultrasonic atomizer, a microporous atomizer, a jet atomizer, a mesh atomizer, etc., and no specific limitation is made here.

[0051] With this configuration, the liquid mist generated by the liquid mist generator 200 at the first end is first rectified by the front rectifier 500, so that the liquid mist enters the flow field simulation area evenly and flows towards the second end where the exhaust fan 600 is installed. At this time, the model (e.g., a vehicle model) is placed in the flow field simulation area, and the changes in the flow field of the model can be observed, such as eddies and flow separation phenomena near the surface of the vehicle model.

[0052] By replacing the original e-liquid with a clean liquid, such as water, the amount of consumables and costs required for small wind tunnel simulators can be significantly reduced. Furthermore, it not only avoids environmental pollution but also provides humidified air, increasing humidity. In addition, this small wind tunnel simulator can operate continuously for extended periods without issues such as overheating, forced shutdown, or high failure rates associated with prolonged use.

[0053] Understandably, to further improve the flow stability of gas and liquid mist within the flow field simulation zone, the small wind tunnel simulation device may also include a rear rectifier (not shown). The rear rectifier may be located between the first and second ends of the main housing 110, and is positioned close to the exhaust fan 600. The liquid mist generated by the liquid mist generator 200 at the first end first enters the flow field simulation zone via the front rectifier 500, and then enters the exhaust fan 600 installed at the second end of the main housing 110 via the rear rectifier, finally being discharged to the outside.

[0054] Figure 3 This is a connection diagram of the small wind tunnel simulation device provided in the embodiments of this application from another perspective. Figure 4 This is a cross-sectional structural diagram of a small wind tunnel simulation device provided in an embodiment of this application. (In conjunction with...) Figure 2-Figure 4 As shown, the small wind tunnel simulation device may also include a flow guide 300. The flow guide 300 is disposed at the first end of the main housing 110 and is connected to the liquid mist generator 200. Furthermore, the flow guide 300 has a mist outlet side facing the front rectifier 500, and a plurality of mist outlet nozzles 3201 are provided on the mist outlet side. The diameter of the plurality of mist outlet nozzles 3201 can be set according to specific needs, or can be set as variable diameter nozzles, and is not specifically limited here.

[0055] With this configuration, the liquid mist generated by the liquid mist generator 200 can flow from the connection point into the guide vane 300, and be sprayed out from multiple mist outlet nozzles 3201 on the mist outlet side of the guide vane 300 towards the rectifier. Furthermore, by adjusting the diameter of the mist outlet nozzles 3201, the thickness of the liquid mist column can be changed, improving the observation experience.

[0056] Specifically, the flow guide 300 includes a docking portion 310 and a flow guide portion 320. The docking portion 310 covers the mist outlet area of ​​the liquid mist generator 200, and liquid mist can enter the interior of the flow guide 300 from the docking portion 310. The flow guide portion 320 is connected to the top of the docking portion 310 and communicates with the docking portion 310.

[0057] The side of the guide section 320 facing the front rectifier 500 is the mist outlet side, and the mist outlet nozzle 3201 is disposed on the guide section 320. With this arrangement, the liquid mist can be concentrated in the guide section 300 and flow out from the mist outlet nozzle 3201, making it less likely for the liquid mist to diffuse and leak, thus improving the utilization rate of the liquid mist.

[0058] In one embodiment, the flow deflector 300 further includes an air outlet 330. The air outlet 330 is disposed on the side of the flow deflector 320 opposite to the front rectifier 500, and the air outlet 330 communicates with the flow deflector 320. The air outlet 330 can be used to provide a boosting airflow so that the liquid mist inside the flow deflector 300 flows rapidly toward the mist nozzle 3201.

[0059] For example, the small wind tunnel simulation device also includes a blower 700. The blower 700 is located at the first end of the main housing 110 and is fixedly installed on the main housing 110. The air outlet of the blower 700 is connected to the air outlet 330 of the guide vane 300. To save internal space in the main housing 110, the blower 700 and the guide vane 300 can be arranged vertically along the height of the housing 100. A connecting structure 710 is connected to the main housing 110. The connecting structure 710 is located within the coverage area of ​​the air outlet 330 and on the side away from the guide vane 320. Furthermore, the inlet of the connecting structure 710 is connected to the air outlet of the blower 700, and the air outlet of the connecting structure 710 is connected to the air outlet 330. Specifically, the air outlet of the connecting structure 710 can be located on the side away from the guide vane 320.

[0060] In this way, the airflow brought by the blower 700 when it is working can enter the air outlet 330 through the air outlet of the connecting structure 710, and after the airflow is blown out through the air outlet, it is blocked by the inner wall of the air outlet 330 and turns to flow towards the guide section 320, thereby driving the liquid mist diffused inside the air outlet 330 to flow towards the guide section 320, and there will be no dead zone for propulsion.

[0061] Because small water droplets are inevitably generated during the operation of the liquid mist generator 200, these water droplets can easily clog the mist nozzle 3201 of the guide 300.

[0062] Figure 5 This is a schematic diagram of the flow guide provided in an embodiment of this application at one angle. Figure 6 This is a schematic diagram of the flow guide provided in an embodiment of this application from another angle. (Refer to...) Figure 5 and Figure 6 As shown, in some embodiments, a partition plate 3202 extending along the height direction of the housing 100 can be connected to the inner wall of the flow guide 320, and the partition plate 3202 is correspondingly arranged with the mist nozzle 3201 and can prevent liquid mist from directly entering the mist nozzle 3201.

[0063] When the booster airflow of the air outlet 330 drives the internal liquid mist to flow through the guide section 320, the partition plate will prevent the liquid mist from flowing directly into the mist outlet nozzle 3201. At this time, the liquid mist needs to flow around the side of the guide section 320 cavity that is not blocked by the partition plate to the inlet end of the mist outlet nozzle 3201. During this process, the small water droplets generated by the liquid mist generator 200 during operation will be blocked by the partition plate, while the remaining liquid mist will flow with the airflow to the mist outlet nozzle 3201, thereby reducing the possibility of the mist outlet nozzle 3201 being blocked by water droplets.

[0064] In some other embodiments, a filter screen can be provided on one side of the flow guide 320 cavity near the inlet end of the mist outlet nozzle 3201. Since the filter screen is provided on the fluid channel from the liquid mist to the inlet end of the mist outlet nozzle 3201, the liquid mist must be filtered by the filter screen before entering the mist outlet nozzle 3201, thereby isolating the water droplets entrained in the liquid mist and preventing the mist outlet nozzle 3201 from becoming clogged.

[0065] Figure 7 This is a partial structural schematic diagram of the housing provided in an embodiment of this application from one viewpoint. Figure 8 This is a partial structural schematic diagram of the housing provided in an embodiment of this application from another perspective.

[0066] like Figure 7 and Figure 8 As shown, the bottom wall of the main housing 110 is provided with a first liquid storage tank 111. The first liquid storage tank 111 can store liquid, such as water. The liquid mist generator 200 includes a vibrating plate 210 disposed at the bottom of the first liquid storage tank 111. The vibrating plate 210 is usually made of piezoelectric ceramic material. Correspondingly, the docking part 310 of the flow guide 300 may also include a mist inlet section with a mist inlet channel inside and a cover section connected to the top of the mist inlet section, and the first diameter of the mist inlet section is smaller than the second diameter of the cover section. The mist inlet section is used to cover the mist outlet area of ​​the liquid mist generated by the vibrating plate 210, and the cover section is used to cover the opening of the first liquid storage tank 111 to prevent the liquid in the first liquid storage tank 111 from splashing outward.

[0067] Under the influence of a high-frequency electrical signal, the oscillating plate 210 will undergo axial mechanical resonance. This mechanical resonance will be transmitted to the liquid surface in the first liquid storage tank 111 in contact with it, causing the liquid surface in the first liquid storage tank 111 to bulge, and cavitation will occur around the bulge.

[0068] The shock waves generated by cavitation repeatedly vibrate at the oscillation frequency of the oscillator, causing surface tension waves with limited amplitude to form on the surface of the liquid in the first storage tank 111. The wavefronts of these tension waves disperse, atomizing the liquid in the first storage tank 111 into a liquid mist of 1 to 5 micrometers. This liquid mist then enters the guide vane 300 through the mist outlet area of ​​the mist generator 200 and into the guide vane 300 via the docking section 310. Under the action of the blower 700, it flows through the mist nozzles 3201 on the guide vane 300, becoming a liquid column that is ejected forward onto the rectifier 500. It can be understood that the mist outlet area of ​​the mist generator 200 here refers to the range of liquid mist generated under the action of the vibrating plate 210.

[0069] The vibrating plate 210 can be fixed to the bottom of the first liquid storage tank 111 by means of screw connection, snap connection or adhesive. As long as the fixing method can ensure that the vibrating plate 210 will not move during vibration and maintain a stable atomization effect, there is no specific limitation on its connection method.

[0070] In some embodiments, to prevent liquid leakage, a sealing ring or gasket may be provided at the connection between the vibrating plate 210 and the first liquid storage tank 111 to ensure that the liquid exists only above the vibrating plate 210 and does not seep into the electronic components inside the vibrating plate 210 or the external connecting wires.

[0071] Continue to refer to Figure 7 and Figure 8 As shown, a second liquid storage tank 112 is also provided on the bottom wall of the main housing 110, and the second liquid storage tank 112 is connected to the first liquid storage tank 111 through a connecting channel. The small wind tunnel simulation device also includes a liquid supply tank 400, which can be used to supply water to the second liquid storage tank 112 and flow to the first liquid storage tank 111 through the connecting channel. Thus, the liquid in the first liquid storage tank 111 is replenished in a timely manner. The liquid supply tank 400 is provided on the main housing 110, and the outlet of the liquid supply tank 400 is connected to the second liquid storage tank 112.

[0072] Specifically, a spring-loaded switch for sealing the outlet of the liquid supply tank 400 is connected to the bottom of the tank. A connecting protrusion 1121 is connected to the bottom of the second storage tank 112. When the liquid supply tank 400 is not installed on the main housing 110, the spring-loaded switch seals the outlet of the liquid supply tank 400, preventing the liquid inside the tank from flowing out and avoiding leakage.

[0073] When the liquid supply tank 400 is installed on the main housing 110, the connecting protrusion 1121 provided in the second liquid storage tank 112 will abut against the contact part of the spring switch. The spring is compressed and the blockage formed between the spring switch and the liquid outlet is released. The liquid supply tank 400 is connected to the second liquid storage tank 112, thereby enabling water replenishment.

[0074] Understandably, when the water level in the second storage tank 112 is higher than the outlet of the supply tank 400, the liquid inside the supply tank 400 will not flow into the second storage tank 112 under atmospheric pressure. When the water level in the second storage tank 112 is lower than the outlet of the supply tank 400, since the supply tank 400 and the second storage tank 112 are in a connected state, the liquid inside the supply tank 400 will flow into the second storage tank 112 in a timely manner to replenish the water source.

[0075] For example, in order to make full use of the internal space of the housing 100, the liquid supply tank 400 may be located on one side of the main housing 110 and extend along the length of the housing 100.

[0076] In one possible implementation, a third liquid storage tank 113 is further provided on the bottom wall of the main housing 110. The third liquid storage tank 113 is connected to the second liquid storage tank 112, and a water level detector 1131 is installed in the third liquid storage tank 113. The product can only operate normally when the water level detector 1131 detects that the water level is up to standard. With this configuration, since the water levels of the first liquid storage tank 111, the second liquid storage tank 112, and the third liquid storage tank 113 are the same, it is only necessary to detect the water level in the third liquid storage tank 113 to determine whether there is a water shortage in the first liquid storage tank 111, and promptly cut off the operation of the liquid mist generator 200 to prevent dry burning.

[0077] The water level detector 1131 may include any one of a float switch, an electrode-type water level sensor, an ultrasonic water level sensor, or a photoelectric water level sensor.

[0078] For example, the water level detector 1131 may include foam and a magnetic component disposed within the foam, which can move up and down with changes in the water level in the third storage tank 113. When the water level is below the target, a proximity switch (such as a reed switch) located at a fixed position sends a shut-off signal to control the shutdown of the liquid mist generator 200.

[0079] In one embodiment, the bottom of the liquid supply tank 400 may also cover the openings of the second liquid storage tank 112 and the third liquid storage tank 113 to prevent external dust or impurities from entering the second liquid storage tank 112 and the third liquid storage tank 113.

[0080] In some embodiments, the small wind tunnel simulation device may also include control components, a model stand, and measuring equipment.

[0081] The control component can be electrically connected to the liquid mist generator 200, exhaust fan 600, blower 700, and water level detector 1131, and can control them. Furthermore, a power knob 115 (see [reference]) can also be provided on the main housing. Figure 1 As shown, the power of the vibrating plate 210 can be controlled by adjusting the power knob 115, thereby adjusting the spray volume.

[0082] The model stand can be used to fix the object being tested (such as an airplane model, a car model, etc.) to ensure that the model remains stable during the test. Specifically, a limiting structure can be set on the bottom wall of the flow field simulation area in the main shell 110, or a groove, a fixing lifting device, etc. can be set, which will not be elaborated here.

[0083] The measuring equipment can measure various parameters using sensors, pressure gauges, and force gauges to facilitate subsequent flow field analysis.

[0084] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A small wind tunnel simulation device, characterized in that, include, A housing, wherein the two ends along the length of the housing are a first end and a second end, respectively; A liquid mist generator, used to generate liquid mist, is disposed at the first end of the housing; A front rectifier is located between the first and second ends of the housing and close to the liquid mist generator; An exhaust fan is disposed at the second end of the housing; The region within the housing located between the front rectifier and the exhaust fan is the flow field simulation region.

2. The small wind tunnel simulation device according to claim 1, characterized in that, The bottom wall of the housing is provided with a first liquid storage tank, and the liquid mist generator includes a vibrating plate disposed at the bottom of the first liquid storage tank; The oscillating plate is used to generate surface tension waves in the liquid in the first storage tank under the action of a high-frequency electrical signal, so as to atomize the liquid into liquid mist.

3. The small wind tunnel simulation device according to claim 2, characterized in that, The bottom wall of the shell is also provided with a second liquid storage tank, which is connected to the first liquid storage tank; The small wind tunnel simulation device also includes a liquid supply tank, which is disposed in the housing and the outlet of the liquid supply tank is connected to the second liquid storage tank.

4. The small wind tunnel simulation device according to claim 3, characterized in that, The liquid supply tank extends along the length of the housing.

5. The small wind tunnel simulation device according to claim 3, characterized in that, The bottom wall of the shell is also provided with a third liquid storage tank, which is connected to the second liquid storage tank, and a water level detector is provided in the third liquid storage tank.

6. The small wind tunnel simulation device according to any one of claims 1-5, characterized in that, Also includes: A flow guide is disposed at the first end of the housing and communicates with the liquid mist generator; the mist outlet side of the flow guide faces the front rectifier, and the mist outlet side is provided with multiple mist outlet nozzles.

7. The small wind tunnel simulation device according to claim 6, characterized in that, The flow guide includes: The docking section covers the mist outlet area of ​​the liquid mist generator; A flow guide is connected to the top of the docking part and communicates with the docking part; the side of the flow guide facing the front rectifier is the mist outlet side.

8. The small wind tunnel simulation device according to claim 7, characterized in that, The flow guide also includes an air outlet, which is disposed on the side of the flow guide away from the front rectifier and is connected to the flow guide. The small wind tunnel simulation device also includes a blower, which is located at the first end of the housing, and the blower's outlet is connected to the air outlet section.

9. The small wind tunnel simulation device according to any one of claims 1-5, characterized in that, The housing includes a main housing and a transparent door. The main housing has an observation port in the flow field simulation area, and the transparent door covers the observation port.

10. The small wind tunnel simulation device according to any one of claims 1-5, characterized in that, The small wind tunnel simulation device also includes a rear rectifier, which is located between the first and second ends of the housing and is positioned close to the exhaust fan.

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