A simulation system and simulation method for a building space airflow field

Abstract

The application relates to a simulation system and a simulation method of a building space airflow field, and belongs to the technical field of airflow simulation. The simulation system can simulate and predict the transient motion of the airflow field under the interference of wind and heat.

Description

Technical Field

[0001] This invention relates to the field of airflow simulation technology, and in particular to a simulation system and method for airflow fields in building spaces. Background Technology

[0002] Research on airflow fields in building spaces mainly relies on model experiments, typically using closed-loop liquid circulation systems. These systems use liquid as the flow medium to simulate gas flow. Specifically, a closed-loop liquid circulation system is built based on the structural dimensions of the building space, using the similarity principle in fluid mechanics. The temperature and flow velocity of the liquid within the system are then used as control targets to simulate changes in the airflow field within the building space. Simulation studies of airflow fields in building spaces are primarily used to understand urban air conditions and predict urban street gas flow fields, thus providing scientific references for urban design and optimization.

[0003] At present, model experiments on airflow fields in building spaces can only predict steady-state environments, but cannot simulate the transient fluctuations of airflow fields in building spaces under the interference of external factors such as heat and wind. They cannot explain the non-steady-state coupling effect of wind and heat disturbances on building spaces. Therefore, existing technologies cannot predict the instantaneous state of airflow fields in building spaces, resulting in inaccurate simulation results. Consequently, they cannot accurately predict the airflow fields in urban street valleys under non-steady-state wind and heat environments, and their application scope is narrow and their practicality is low. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a simulation system and method for airflow field in building space, in order to solve the problems of existing technologies being unable to simulate the instantaneous state of airflow field in building space, inaccurate simulation results, narrow application scope, and low practicality.

[0005] The objective of this invention is mainly achieved through the following technical solutions:

[0006] A simulation system for airflow field in building space includes: a main tank, a pump, an inflow tank, and a model groove.

[0007] Furthermore, the main tank, pump, inlet tank, and model groove are connected in sequence through pipelines to form a closed loop.

[0008] Furthermore, the pump can pump liquid from the main tank into the model recess to simulate the airflow field.

[0009] Furthermore, it also includes a flow meter, which is located between the pump and the inlet tank.

[0010] Furthermore, it also includes an outflow box, which is located between the main box and the inflow box.

[0011] Furthermore, it also includes an exhaust valve, which is located between the model groove and the outlet box.

[0012] Furthermore, the groove of the model is made of copper.

[0013] Furthermore, the tank walls are provided with an anti-permeability layer.

[0014] Furthermore, the outlet box is equipped with a motor and an impeller, and the motor can drive the impeller to rotate.

[0015] A simulation method based on the aforementioned building space airflow field simulation system is characterized by comprising: step S1, calculating the motion parameters of the liquid within the simulation system, including simulated velocity and simulated temperature; and step S2, conducting a simulation experiment.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] (1) The system and method of the present invention for simulating the airflow field in a building space can simulate and detect the instantaneous state of the airflow field in a building space with high accuracy.

[0018] (2) The system and method of the present invention for simulating airflow field in building space can simulate the instantaneous state of airflow field under the dual interference of wind and heat in building space by adjusting the liquid flow rate by a pump and adjusting the liquid heating temperature by a heating device.

[0019] (3) The system and method of the present invention for simulating the airflow field of a building space use a PIV laser particle velocimeter to photograph and process the tracer particles in the model groove within the system, thereby obtaining the displacement image of the tracer particles in the model groove and detecting the instantaneous state of the simulated building space airflow field.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the specification or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the content specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0021] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0022] Figure 1 This is a framework diagram of the simulation system for the airflow field in the building space in Embodiment 1 of the present invention;

[0023] Figure 2This is a flowchart of step S1 of the method for simulating the airflow field in a building space in Embodiment 2 of the present invention;

[0024] Figure 3 This is a flowchart of step S2 of the method for simulating the airflow field in a building space in Embodiment 2 of the present invention.

[0025] Figure label:

[0026] 1-Main box; 2-Pump; 3-Inlet box; 31-Box body; 32-Screen; 33-Honeycomb perforated plate; 34-Converging tube; 4-Model groove; 41-Trench body; 5-Outlet box. Detailed Implementation

[0027] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0028] Example 1

[0029] This embodiment discloses a simulation system for airflow fields in building spaces, such as... Figure 1 As shown, it includes: main tank 1, pump 2, flow meter, inlet tank 3, model groove 4, outlet tank 5, regulating valve and exhaust valve; the various devices are connected by pipelines to form a closed loop system, in which the liquid can circulate.

[0030] The main tank 1 is equipped with a drain pipe for drawing liquid into the main tank 1; the main tank 1 is equipped with a cooling device and a K-type thermocouple. The cooling device is used to cool the circulating liquid in the system and can maintain a constant liquid temperature in the system; the K-type thermocouple is a temperature sensor used to measure the liquid temperature and works with a temperature measuring instrument to achieve temperature feedback.

[0031] The input side of pump 2 is connected to the output side of main tank 1 to provide power for the liquid in main tank 1; pump 2 is selected as a peristaltic pump to give the liquid in the system a high flow rate, thereby making the liquid temperature change smaller.

[0032] Optionally, a flow meter is provided on the output side of pump 2 to record the liquid flow rate in the pipeline.

[0033] Optionally, each device on the pipeline is equipped with a regulating valve on its input side, which can precisely regulate the incoming flow rate of the device. Therefore, the number and position of regulating valves can be set on the pipeline according to experimental needs.

[0034] The exhaust valve is located between the model groove 4 and the outlet box 5 to facilitate the removal of gas from the model groove 4 and reduce the impact of air bubbles on the flow field in the model groove 4.

[0035] The inlet box 3 is connected to the output side of the flow meter and is used to adjust the flow state of the liquid entering the model groove 4. It includes a box body 31, a screen 32, a honeycomb perforated plate 33, and a tapered tube 34.

[0036] The housing 31 is provided with multiple inlets, which allow the fluid to flow into the housing 31 from each inlet, thereby reducing the inflow vortex of the fluid.

[0037] Optionally, a regulating valve is installed on the pipeline at the inlet of the housing 31, which can be used to precisely adjust the flow rate at the inlet of the housing 31.

[0038] The box 31 is equipped with a tapered tube 34. One end of the tapered tube 34 is the inlet end, located inside the box 31; the other end is the outlet end, which is the outlet of the box 31. The inlet and outlet are connected by a cavity. The diameter of the inlet end of the tapered tube 34 is larger than the diameter of the outlet end. The cavity connecting the two ends transitions from the curved surface of the inlet end to the outlet end. After the liquid enters the tapered tube 34 from the inlet end, it flows out of the box 31 from the outlet end. During this process, the inner diameter of the pipe gradually decreases, making the liquid flow in the tapered tube 34 tend to be stable, so that the liquid can flow smoothly into the model groove 4.

[0039] The box 31 has one or more screens 32 inside, and the mesh structure makes the liquid inside the box 31 become uniform turbulent; the screens 32 are fixed on the inner wall of the box 31 and are opposite to the inlet end of the converging tube 34.

[0040] Optionally, covering the inlet of the housing 31 with a perforated honeycomb plate 33 can reduce the liquid vortex at the inlet of the housing 31.

[0041] Optionally, mesh plates are provided at both the outlet and inlet ends of the converging tube 34 to cover the ports, thereby further stabilizing the liquid passing through the converging tube 34.

[0042] After the incoming flow from the box 31 passes through the honeycomb perforated plate 33, the screen 32 and the tapered tube 34, the liquid becomes a uniform turbulent flow, which is convenient for simulating the movement state of airflow in the building space.

[0043] The model groove 4 is connected to the output side of the inlet box 3. The size of the model groove 4 is determined according to the similarity ratio of the building space and the length, and is used to simulate the building space. The model groove 4 includes a groove body 41, a heating device, a tracer particle emission device and a PIV laser particle velocimeter.

[0044] The tank 41 is connected to the pipeline at the top and bottom, forming a whole, so that liquid flows in from the upper pipeline and fills the tank 41, which is convenient for simulating the airflow movement inside and above the building space.

[0045] The heating device is located on the outer wall of the tank 41 and includes an infrared silicon carbide heater, a temperature sensor, and a thermometer.

[0046] The infrared silicon carbide heater is equipped with a programmable silicon controlled thyristor voltage regulator, which adjusts the input voltage of the heater to independently regulate the temperature of the outer wall of the tank 41. The temperature sensor is a type K thermocouple, which is located on the outer wall of the infrared silicon carbide heater in the tank 41 for temperature sensing. The preferred temperature measuring instrument is a four-channel handheld temperature tester, which works with the temperature sensor to achieve temperature feedback, thereby completing temperature regulation and measurement.

[0047] Optionally, an insulation layer can be installed outside the heating device to ensure heating efficiency.

[0048] The tracer particle emitting device consists of multiple glass straws arranged in parallel, each containing tracer particles. The glass straws are coplanar, with their faces perpendicular to the pipeline. Each glass straw contains a piston rod, which includes a rod body and a piston head at one end. Pushing the rod body moves the piston head, causing it to expel the tracer particles from the glass straws. The pipeline connecting to the input side of the model groove 4 has the same number of circular holes as the glass straws, for inserting the glass straws from the tracer particle emitting device. This allows the tracer particles inside the glass straws to flow into the model groove 4 along with the liquid in the pipeline, thus displaying the liquid flow pattern inside the model groove 4 and achieving flow field visualization.

[0049] The PIV laser particle velocimeter is used to capture the transient flow of liquid within the model groove 4 and process the captured data to obtain liquid flow data, thereby enabling flow state detection of the liquid within the model groove 4. The PIV laser particle velocimeter includes a laser, a signal synchronization controller, a light guide arm, and a PIV camera. The laser is used to emit laser light to display the tracer particles within the tube. The light guide arm is used to adjust the orientation of the laser emitted by the laser. The PIV camera is used to photograph the tracer particles illuminated by the laser. The signal synchronization controller is used to synchronize the timing control of the entire system and includes PIV data processing software that can process the captured images to form tracer particle displacement images. That is, based on the corresponding particles in two adjacent frames, an effective tracer particle displacement image is established, and cross-correlation processing of the images is achieved. When the time interval is small enough, the average particle velocity can be used to represent the instantaneous velocity at that point, thus obtaining the flow field distribution under wind and heat interference.

[0050] Optionally, the groove 41 of the model groove 4 is made of copper and the wall is sprayed with black rough paint to avoid light reflection from the wall of the groove 41, which would interfere with the display of the tracer particles.

[0051] Optionally, an anti-permeability layer is sprayed on the wall of the tank 41 to prevent liquid from seeping into the wall of the tank 41 and thus affecting the liquid flow pattern inside the tank 41, resulting in inaccurate experimental results.

[0052] Optionally, all other equipment in the device, except for the model groove 4, is made of transparent hard material, such as transparent plexiglass or plastic, to facilitate observation of fluid movement patterns.

[0053] The outlet box 5 is located on the output side of the model groove 4 and is designed to be open to receive the incoming flow from the model groove 4. The open design can stabilize the liquid pressure in the circulation pipeline, effectively remove air bubbles in the liquid circulation system, and ensure that the liquid flowing through the model groove 4 and the pipeline above it can flow through the entire pipe.

[0054] Optionally, the outflow box 5 is equipped with a motor and an impeller. The impeller is mounted on the motor, which drives the impeller to rotate. The motor speed can be adjusted, thereby strengthening the stirring of the liquid inside the outflow box 5 through the rotation of the impeller. This allows for more thorough removal of gas from the system and also ensures that the tracer particles entering the outflow box 5 are stirred evenly. This facilitates the tracer particles to accurately display the flow pattern of the liquid in the model groove 4 after re-entering the model groove 4 through the circulation system, improving the accuracy of the simulation experiment. Furthermore, by enhancing the liquid surging, the power of the liquid in the outflow box 5 to return from the outflow box 5 to the main box 1 can be increased, thereby improving efficiency.

[0055] Example 2

[0056] This embodiment discloses a method for simulating airflow fields in building spaces, using a system for simulating airflow fields in building spaces as described in Embodiment 1. Figure 1 As shown, the specific steps include:

[0057] Step S1: Determine the liquid simulation parameters

[0058] Based on the flow field properties of the building space, the governing equation method is adopted to select the similarity criterion number of the experimental model, and the motion conditions required for the model experiment are calculated using the similarity criterion number.

[0059] In step S1, by bringing the liquid in the system to the simulated parameters, the liquid in the system can achieve the same flow state as the gas in the building space.

[0060] refer to Figure 2 , specifically:

[0061] Step S11: Select the number of similarity criteria

[0062] The flow field in the building space is a hybrid convection, which is a coupling of forced convection caused by environmental wind dynamics and natural convection caused by thermal buoyancy. The Reynolds number Re and the Richardson number Rb are selected as similarity criteria numbers for the liquid and the gas in the building space in the simulation system.

[0063] The Reynolds number Re is used to characterize the flow state of viscous fluids. By using the Reynolds number Re, the flowing liquid in the model groove 4 and the airflow in the building space are made similar in terms of viscous force and inertial force.

[0064] The Richardson number Rb is used to describe the intensity of gas mixing and convection in a building space under the influence of thermal buoyancy. The Rb value is obtained through groove 4 in the model. m Equal to Rb in the building space makes the liquid flow in the model groove 4 similar to the airflow in the building space in terms of thermal buoyancy and inertial force.

[0065] Step S12: Calculate the Reynolds number Re and Richardson number Rb for the building space.

[0066] Reynolds number of architectural space U represents the incoming wind speed in the urban area where the building space is located, in m / s; D represents the dimensions of the building space (length, width, and height), in m; ν represents the kinematic viscosity of the gas, in m. 2 / s.

[0067] Richardson number of architectural space Rb=gH(T) a -T0) / [(Ta+273)·U 2H [g is the acceleration due to gravity, m] 2 / s; H represents the height of the building space, in meters; T a T0 represents the temperature of the incoming gas in the building space, in °C; T0 represents the temperature of the hot surface (exterior wall or floor) in the building space, in °C; U 2H The wind speed at twice the building's height is expressed in m / s.

[0068] Step S13: Determine the dimensions of the model groove.

[0069] Based on the laboratory space conditions, the achievable scale constant λ is determined; the dimension D of the model groove 4 is determined. m =D / λ.

[0070] Step S14: Calculate the liquid motion parameters within the model groove.

[0071] Step S141: Calculate the simulated flow velocity u m

[0072] Based on the Reynolds number Re of the gas in the building space, determine its flow regime. If it is laminar flow, then Re = Re m According to u m =Re m ν / D m Determine the simulated flow velocity u of the liquid in model groove 4. mIf the Reynolds number Re of the gas in the building space belongs to the turbulent flow regime, and the Re of the gas in the building space is in the turbulent self-modeling region, then when using liquid to simulate the gas in the building space, the Re of the liquid in the model groove 4 will also be affected. m To achieve the turbulent self-modeling region, the liquid in model groove 4 must flow in a manner similar to the gas flow in the building space. Therefore, a Reynolds self-modeling region for liquid turbulence needs to be selected within this region. m Trial calculations were performed to make the flow of liquid in model groove 4 similar to the flow of gas in the building space in terms of viscous force and inertial force;

[0073] Step S142: Calculate the simulated temperature T am

[0074] The selected Re m Calculate the simulated flow velocity u in the corresponding model groove 4. m Furthermore, based on the principle of similarity, the Richardson number Rb of the architectural space is equal to the Richardson number Rb of the model recess 4. m And the laboratory room temperature liquid temperature T 0m According to Rb m =gH m (T am -T 0m ) / [(Ta m +273)·U 2Hm The simulated temperature T of the liquid in model groove 4 was calculated. am ;

[0075] Step S143, verify the simulated temperature T am

[0076] If T am The temperature is lower than the vaporization temperature of the liquid, so the required temperature of the heating surface is also lower than the vaporization temperature of the liquid. The simulation experiment can proceed normally, indicating that the Re selected in step S141 is correct. m If it is reasonable, then it can be based on u m =Re m ν / D m Determine the simulated flow velocity u of the liquid in model groove 4. m If T am The temperature is higher than the vaporization temperature of the liquid, making the required temperature of the heating surface close to the vaporization temperature of the liquid. This easily causes the liquid in the model groove 4 to vaporize, interfering with the flow field display, indicating that the Re selected in step S141... m This is unreasonable; Re needs to be selected again. m Then repeat steps S141-S142 to determine the simulated flow velocity u in model groove 4. m Until T is obtained am Below the vaporization temperature of the liquid.

[0077] Step S2: Conduct a simulation experiment

[0078] like Figure 3 As shown, specifically:

[0079] Step S21: Introduce liquid into the system

[0080] Turn on the motors in pump 2 and outlet box 5, and draw liquid into main box 1 through the inlet pipe. The liquid begins to circulate in the system: after flowing out of main box 1, it enters model groove 4 through inlet box 3 to simulate the airflow field, and then flows out of model groove 4 and returns to main box 1 through outlet box 5. After the liquid fills the entire system, the liquid maintains the flow in the system for a period of time, so that the liquid flow is stable.

[0081] Step S22: Release tracer particles

[0082] After the liquid flow in the system stabilizes, the piston rod of the glass pipette of the tracer particle emission device is pushed. The piston head at one end of the piston rod squeezes the tracer particles inside the glass pipette into the system pipeline. The tracer particles dissolve in the liquid and flow evenly throughout the entire system with the liquid flow.

[0083] Step S23: Adjust the outflow box

[0084] By adjusting the motor speed of the outflow box 5 to drive the impeller to rotate, the liquid inside the outflow box 5 can be amplified to flow without overflowing the box, thereby accelerating the uniform distribution of tracer particles within the system.

[0085] Step S24: Adjust the liquid temperature

[0086] Turn on the cooling device in main tank 1 and set the initial liquid temperature T. 0m The system is preferably set to room temperature. A K-type thermocouple is used in conjunction with a temperature measuring instrument to sense and provide feedback on the liquid temperature, thereby adjusting the incoming liquid temperature of the main tank 1 so that the initial temperature T of the liquid flowing out of the main tank 1 and into the model groove 4 is achieved. 0m Constant.

[0087] Step S25: Simulate a constant temperature airflow field

[0088] After the liquid temperature stabilizes, observe the flow meter and adjust pump 2 to precisely control the liquid flow rate, ensuring that the liquid flow velocity is the simulated flow velocity u. m At this point, the liquid flow state is similar to the airflow state in the building space, realizing the simulation of the airflow state in the building space through the liquid in the model groove 4 under constant temperature steady state.

[0089] By maintaining a constant liquid temperature and adjusting pump 2 to achieve different flow rates, the liquid in the model groove 4 is used to simulate the gas flow patterns under different gas flow rates in a building space under constant temperature conditions.

[0090] Step S26: Simulate the airflow field affected by both wind and heat.

[0091] Set the heating device on the model groove 4 to temperature ta. m This causes the wall of the model groove 4 to reach the set temperature: on the one hand, the heating effect of the wall of the model groove 4 causes the liquid to generate buoyancy flow in the model groove 4; on the other hand, the pump 2 drives the liquid to generate mainstream movement in the model groove 4, so that the fluid in the model groove 4 is simultaneously disturbed by two unsteady factors, heating and incoming flow, which can simulate the airflow field in the building space under the simultaneous disturbance of two unsteady factors, heat and external wind force.

[0092] By maintaining a constant liquid flow rate, the fluid in the model groove 4 is heated to different temperatures, thereby enabling the prediction of airflow fields under different heating temperatures and the same wind speed interference in the building space.

[0093] By changing the liquid flow rate and setting different liquid flow rates at different heating temperatures, it is possible to predict the airflow field in a building space under different heating temperatures and different wind speed disturbances.

[0094] Step S27: Obtain simulated flow field image

[0095] The PIV laser particle velocimeter is used to monitor, photograph, and process the liquid flow state in the model groove 4 in real time to obtain tracer particle displacement images, thereby realizing the detection of the instantaneous flow field of gas in the building space.

[0096] The specific steps are as follows:

[0097] Step S271: Display tracer particles

[0098] A fluid cross-section is selected within the model groove 4, and a laser is used to irradiate the selected fluid cross-section, so that the irradiated area displays the trajectory of the tracer particles.

[0099] Step S272: Capture motion trajectory

[0100] The horizontal axis of the PIV camera lens is perpendicular to the cross section being measured in the experiment. The PIV camera is used to photograph the tracer particles, thereby capturing the motion trajectory of the liquid flow field inside the pipeline.

[0101] Step S273: Obtain the displacement image of the tracer particles.

[0102] The PIV camera transmits relevant data to the signal synchronization controller. The PIV data processing software in the signal synchronization controller processes the data and establishes an effective tracer particle displacement image based on the corresponding particles in two adjacent frames. This allows the instantaneous flow field state of the liquid in the model groove 4 to be obtained, thereby obtaining the instantaneous state of the airflow field in the simulated building space.

[0103] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A simulation method for a building space airflow field simulation system, characterized in that, The simulation system includes: a main tank, a pump, an inlet tank, a model groove, a flow meter, a regulating valve, an exhaust valve, and an outlet tank. The pump's input side is connected to the main tank's output side, providing power to the liquid in the main tank. A flow meter is installed on the pump's output side to record the liquid flow velocity in the pipeline. The inlet tank is connected to the flow meter's output side to adjust the flow state of the liquid entering the model groove. The model groove is connected to the inlet tank's output side. The outlet tank is located on the model groove's output side and is open, used to receive the incoming flow from the model groove. A motor and impeller are installed inside the outlet tank; the motor drives the impeller to rotate. The model groove includes a tank body, a heating device, a tracer particle emitter, and a PIV laser particle velocimeter. The heating device is located on the outer wall of the tank body. The simulation method includes: Step S1: Calculate the motion parameters of the liquid within the simulation system, including simulated velocity and simulated temperature; specifically, Step S11: Select the number of similarity criteria: The Reynolds number Re and the Richardson number Rb were selected as the similarity criteria numbers for the liquid and the gas in the building space of the simulation system; Step S12: Calculate the Reynolds number Re and Richardson number Rb for the building space: Reynolds number of architectural space U represents the incoming wind speed in the urban area where the building space is located, in m / s; D represents the dimensions of the building space, in m. The viscosity of a gas is represented by m. 2 / s; Richardson number of architectural space Rb=gH(T) a -T0) / [(T a +273)·U 2H 2 ], The acceleration due to gravity is m / s². 2 ; The height of the building space, in meters (m); The temperature of the incoming gas in the building space, expressed in °C. Temperature of a hot surface in a building space, expressed in °C; The incoming wind speed at twice the building's height is expressed in m / s. Step S13: Determine the dimensions of the model groove: Based on the laboratory space conditions, the scaling constant λ for realization is determined; the size D of the model groove is determined. m =D / λ; Step S14: Calculate the liquid motion parameters within the model groove; Step S141: Calculate the simulated flow velocity u m : Determine the flow regime of the gas in the building space based on the Reynolds number Re. If it is laminar flow, then Re = Re m According to u m =Re m ν / D m Determine the simulated flow velocity u of the liquid in the model groove. m ; If the flow is turbulent, the Reynolds number (Re) of the gas in the building space is within the turbulent self-modeling region. When simulating the gas in the building space using a liquid, a Re is selected within the liquid's turbulent Reynolds self-modeling region. m Trial calculations were performed to make the liquid flow in the model groove similar to the gas flow in the building space in terms of viscous and inertial forces; Step S142: Calculate the simulated temperature T am : The selected Re m Calculate the simulated flow velocity u in the corresponding model groove. m Furthermore, based on the principle of similarity, the Richardson number Rb of the architectural space is equal to the Richardson number Rb of the model recess. m And the laboratory room temperature liquid temperature T 0m According to Rb m =gH m (T am -T 0m ) / [(T am +273)·U 2Hm 2 The simulated temperature T of the liquid in the model groove was calculated. am ; Step S143, verify the simulated temperature T am : If T am If the temperature is below the vaporization temperature of the liquid, then the Re selected in step S141... m Reasonable, according to u m =Re m ν / D m Determine the simulated flow velocity u of the liquid in the model groove. m ; If T am If the temperature is higher than the vaporization temperature of the liquid, then the Re selected in step S141... m Unreasonable, select Re again. m Then repeat steps S141-S142 to determine the simulated flow velocity u in the model groove. m Until T is obtained am Below the vaporization temperature of the liquid; Step S2: Conduct a simulation experiment.

2. The simulation method according to claim 1, characterized in that, The pump can pump liquid from the main tank into the model recess to simulate the airflow field.

3. The simulation method according to claim 2, characterized in that, The exhaust valve is located between the model groove and the outlet box.

4. The simulation method according to claim 3, characterized in that, The tank is made of copper.

5. The simulation method according to claim 4, characterized in that, The tank wall is provided with an anti-permeability layer.

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