Pig body contact type cold plate heat exchange simulation method and system

Abstract

The invention relates to a pig body contact type cold plate heat exchange simulation method and system, and belongs to the computer simulation technology, a three-dimensional model comprising a simulation pig body and a simulation cold plate is constructed, and grid division is carried out on the three-dimensional model to obtain a grid-divided model; calibrating the model after grid division, and acquiring boundary setting input by a user based on the model after grid division; the boundary setting comprises a plurality of parameters composed of different factors, and heat exchange between the pig body and the cold plate is simulated through the boundary setting and preset parameters influencing heat transfer between the simulated pig body and the simulated cold plate, so that the parameters influencing the heat dissipation performance of the simulated cold plate are obtained; and finally, evaluating the heat dissipation performance of the simulated cold plate. Therefore, a user can fully evaluate the heat dissipation performance of the cold plate according to different factors, and finally the performance of the cold plate in practical application is comprehensively reflected.

Description

Technical Field

[0001] The present invention relates to the technical field of computer simulation, and particularly to a method and system for simulating the heat exchange of a pig body contact cold plate. Background Art

[0002] As an important livestock for breeding, the growth performance and health status of pigs are significantly affected by the environmental temperature, which makes it easy for pigs to get diseases in a high-temperature environment, resulting in economic losses. Currently, cold plates are mostly used as heat dissipation devices in the pigsty for cooling.

[0003] However, how to evaluate the cooling performance of the cold plate has become a difficult problem in current research. The existing research mainly focuses on the influence of single factors on the heat dissipation performance. However, in the actual breeding environment, the heat dissipation performance of the cold plate is affected by multiple factors. These factors are interrelated and interact with each other, and the research results of single factors are difficult to comprehensively reflect the performance of the cold plate in actual applications.

[0004] Currently, there is a lack of an efficient evaluation method to evaluate the heat dissipation performance of the cold plate.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the above-mentioned defects and provide a method and system for simulating the heat exchange of a pig body contact cold plate.

[0007] To solve the above technical problem, the technical solution provided by the present invention is as follows:

[0008] On the one hand, the present invention discloses a method for simulating the heat exchange of a pig body contact cold plate, including the following steps: constructing a three-dimensional model including a simulated pig body and a simulated cold plate; performing mesh division on the three-dimensional model to obtain a model after mesh division; calibrating the model after mesh division and obtaining boundary settings input by the user based on the model after mesh division; obtaining preset parameters affecting the heat transfer between the simulated pig body and the simulated cold plate, and performing simulation based on the preset parameters and the boundary settings to obtain parameters affecting the heat dissipation performance of the simulated cold plate, so as to evaluate the heat dissipation performance of the simulated cold plate.

[0009] Optionally, the three-dimensional model at least includes the contact area between the simulated pig body and the simulated cold plate, the water flow area, the contact area between the simulated cold plate and the water flow, the water flow inlet, and the water flow outlet.

[0010] Optionally, the meshing of the three-dimensional model to obtain the meshed model includes: importing the three-dimensional model into Hypermesh software; dividing the simulated pig body and the water flow area using tetrahedral elements; encrypting the contact area between the simulated pig body and the simulated cold plate, the contact area between the simulated cold plate and the water flow, the water inlet, and the water outlet using triangular surface meshes; iteratively optimizing the above division results, and adjusting the mesh size, shape, and distribution; monitoring and evaluating the mesh quality, and outputting the meshed model with qualified evaluation.

[0011] Optionally, the calibration of the meshed model includes: inputting the meshed model into ANSYS Fluent software; obtaining the size of the mesh after meshing in the meshed model, comparing the size with a preset size, and when the comparison is inconsistent, scaling the meshed model so that the scaled size is consistent with the preset size.

[0012] Optionally, the preset parameters affecting the heat transfer between the simulated pig body and the simulated cold plate at least include: water inlet temperature, water inlet gauge pressure, surface temperature of the simulated pig body, material of the simulated cold plate, and thickness of the pigskin of the simulated pig body.

[0013] Optionally, the parameters affecting the heat dissipation performance of the simulated cold plate at least include: heat transfer rate; the heat transfer rate is expressed by the following formula:

[0014]

[0015] where represents the heat transfer rate; represents the heat transfer coefficient; represents the contact area between the simulated pig body and the simulated cold plate; represents the surface temperature of the simulated pig body; represents the ambient temperature.

[0016] Optionally, the evaluation of the heat dissipation performance of the simulated cold plate includes: when the heat transfer efficiency is higher than the preset interval, the heat dissipation performance of the simulated cold plate is excessive; when the heat transfer efficiency is within the preset interval, the heat dissipation performance of the simulated cold plate meets the requirements; when the heat transfer efficiency is lower than the preset interval, the heat dissipation performance of the simulated cold plate is insufficient.

[0017] On the other hand, the present invention also discloses a pig body contact type cold plate heat exchange simulation system, including: a model establishment module, which models three-dimensional models of a simulated pig body and a simulated cold plate; a first processing module, which is used to perform mesh division on the three-dimensional models to obtain the models after mesh division; a second processing module, which calibrates the models after mesh division and obtains the boundary settings input by the user based on the models after mesh division; a simulation module, which is used to obtain preset parameters affecting heat transfer between the simulated pig body and the simulated cold plate, and perform simulation based on the preset parameters and the boundary settings to obtain parameters affecting the heat dissipation performance of the simulated cold plate.

[0018] Optionally, the first processing module includes: a first processing sub-module, which is used to import the three-dimensional models into Hypermesh software; a division module, which is used to divide the simulated pig body and the water flow area by using tetrahedral elements; an encryption module, which is used to encrypt the contact area between the simulated pig body and the simulated cold plate, the contact area between the simulated cold plate and the water flow, the water flow inlet, and the water flow outlet by using triangular surface meshes; an iterative monitoring module, which is used to perform iterative optimization on the meshes, adjust the mesh size, shape, and distribution, monitor and evaluate the mesh quality, and output the models after mesh division with qualified evaluation.

[0019] Optionally, the second processing module includes: a transmission sub-module, which inputs the models after mesh division into ANSYS Fluent software; a second processing sub-module, which is used to measure the size of the meshes after mesh division in the models after mesh division, compare the size with a preset size, and when the comparison is inconsistent, scale the models after mesh division so that the scaled size is consistent with the preset size.

[0020] The present invention constructs three-dimensional models including a simulated pig body and a simulated cold plate, performs mesh division on the three-dimensional models to obtain the models after mesh division; calibrates the models after mesh division, and obtains the boundary settings input by the user based on the models after mesh division; the boundary settings include parameters composed of various different factors, and through the boundary settings and preset parameters affecting heat transfer between the simulated pig body and the simulated cold plate, simulate the heat exchange between the pig body and the cold plate, so as to obtain parameters affecting the heat dissipation performance of the simulated cold plate, and finally evaluate the heat dissipation performance of the simulated cold plate. So that users can fully evaluate the heat dissipation performance of the cold plate according to different factors, and finally comprehensively reflect the performance of the cold plate in actual applications. Description of the Drawings

[0021] Figure 1 is a flowchart of a pig body contact type cold plate heat exchange simulation method provided by an embodiment of the present invention;

[0022] Figure 2 is provided by an embodiment of the present inventionFigure 1 Sub - flowchart of S200 in

[0023] Figure 3 It is provided by an embodiment of the present invention Figure 1 Sub - flowchart of S300 in

[0024] Figure 4 It is a connection block diagram of a pig body contact - type cold plate heat exchange simulation system provided by an embodiment of the present invention;

[0025] Figure 5 It is a connection block diagram of the first processing module of a pig body contact - type cold plate heat exchange simulation system provided by an embodiment of the invention; <000>

[0026] Figure 6 It is a connection block diagram of the second processing module of a pig body contact - type cold plate heat exchange simulation system provided by an embodiment of the invention;

[0027] Figure 7 It is a schematic diagram of a simulated pig body of a pig body contact - type cold plate heat exchange simulation method provided by an embodiment of the present invention;

[0028] Figure 8 It is a schematic diagram of a simulated cold plate of a pig body contact - type cold plate heat exchange simulation method provided by an embodiment of the present invention;

[0029] Figure 9 It is a three - dimensional model schematic diagram of a pig body contact - type cold plate heat exchange simulation method provided by an embodiment of the present invention;

[0030] Figure 10 It is a result schematic diagram in a simulation experiment of a pig body contact - type cold plate heat exchange simulation method provided by an embodiment of the present invention.

[0031] Reference numerals:

[0032] 100, pig body contact - type cold plate heat exchange simulation system; 110, model establishment module; 120, first processing module; 121, first processing sub - module; 122, division module; 123, encryption module; 124, iterative monitoring module; 130, second processing module; 131, transmission sub - module; 132, second processing sub - module; 140, simulation module. Detailed implementation manners

[0033] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0034] As described above, when the cold plate is used as a heat dissipation device for cooling in pig houses, the existing technology mainly focuses on the influence of a single factor on the heat dissipation performance of the cold plate. However, in the actual breeding environment, the heat dissipation performance of the cold plate is affected by multiple factors. These factors are interrelated and interact with each other, and the research results of a single factor are difficult to comprehensively reflect the performance of the cold plate in actual applications.

[0035] In view of this, the present invention provides a method and system for simulating the heat exchange of a pig body contact cold plate, which solves the above problems. The present invention is solved in the following way:

[0036] Embodiment 1:

[0037] Please refer to the attached Figure 1 of the specification. As shown in the figure, the present invention provides a method for simulating the heat exchange of a pig body contact cold plate, and the method includes:

[0038] S100. Construct a three-dimensional model including a simulated pig body and a simulated cold plate.

[0039] S200. Perform mesh division on the three-dimensional model to obtain the model after mesh division.

[0040] S300. Calibrate the model after mesh division and obtain the boundary settings input by the user based on the model after mesh division.

[0041] S400. Obtain preset parameters that affect the heat transfer between the simulated pig body and the simulated cold plate, and perform simulation based on the preset parameters and the boundary settings to obtain parameters that affect the heat dissipation performance of the simulated cold plate, so as to evaluate the heat dissipation performance of the simulated cold plate (the simulation results are as Figure 10 shown).

[0042] Through the above method, based on different preset parameters that affect the heat transfer between the simulated pig body and the simulated cold plate, parameters that affect the heat dissipation performance of the simulated cold plate can be obtained. Through these parameters, the heat dissipation performance of the simulated cold plate can be evaluated, taking into account the mutual connection and mutual influence between factors, and comprehensively reflecting the performance of the cold plate in actual applications.

[0043] Embodiment 2:

[0044] Based on the above embodiment, in order to further clearly and completely explain the technical solution therein, the present invention also provides Embodiment 2. As Figure 2 , Figure 3As shown in the figure, in the second embodiment, a 3D model is constructed using 3D modeling software (such as Solidworks, Creo). The 3D model at least includes the contact area between the simulated pig body and the simulated cold plate, the water flow area, the contact area between the simulated cold plate and the water flow, the water inlet, and the water outlet.

[0045] Among them, when constructing the simulated pig body, anatomical data of pigs need to be referred to in order to accurately depict the external contour of the pig body, including the shapes and sizes of parts such as the head, trunk, and limbs. At the same time, the influence of the general distribution of internal organs in the pig body on the overall heat conduction is considered.

[0046] The design of the simulated cold plate takes into account parameters such as the shape (such as circular, rectangular, spiral, etc.), size (channel diameter, width, height, etc.), and spacing of the fluid channels to optimize the flow performance and heat dissipation effect of the coolant in the simulated cold plate. For example, for large fattening pigs, a cold plate with a larger size can be designed and a spiral fluid channel can be used to increase the contact area between the coolant and the cold plate and improve the heat dissipation efficiency; while for piglets, a cold plate with a smaller size can be designed and a circular fluid channel can be used to reduce the weight and cost of the cold plate. The 3D models of the simulated pig body and the simulated cold plate are as shown in Figure 7 and Figure 9 shown.

[0047] After the construction of the 3D model is completed, the model is exported as an STP format file. The STP format is a common 3D model exchange format with good compatibility and can be recognized and imported by various mesh generation software and analysis software, ensuring seamless transfer and subsequent processing of the model between different software.

[0048] In the second embodiment, the S200 may further include: S210 importing the 3D model into the Hypermesh software.

[0049] S220 dividing the simulated pig body and the water flow area using tetrahedral elements;

[0050] S230 performing encryption processing on the contact area between the simulated pig body and the simulated cold plate, the contact area between the simulated cold plate and the water flow, the water inlet, and the water outlet using triangular surface meshes;

[0051] S240 performing iterative optimization on the above division results and adjusting the mesh size, shape, and distribution;

[0052] S250 monitoring and evaluating the mesh quality and outputting the model after mesh division with qualified evaluation.

[0053] For example, when meshing the model, special treatment is carried out for the contact area between the pig body and the cold plate. This treatment is based on the principle of finite element analysis. While ensuring the unity of the physical quantities of the nodes on the contact surface between the pig body and the cold plate, the heat transfer coefficient of the skin on the surface of the pig body is accurately set. In this way, the temperatures of different media (pig body, cold plate) on the contact surface are kept consistent, effectively reducing the numerical calculation error, improving the stability of the model in the simulation of the heat exchange process, and ensuring that the simulation results are closer to the actual situation. This treatment not only optimizes the consistency of the node temperatures in the heat conduction simulation, but also fully considers the influence of the heat transfer characteristics of the skin on the surface of the pig body on the heat exchange, comprehensively improving the accuracy of the simulation.

[0054] In the second embodiment, S300 may further include:

[0055] S310 inputs the meshed model into ANSYS Fluent software.

[0056] S320 obtains the size of the mesh after meshing the meshed model, compares this size with a preset size, and when the comparison is inconsistent, scales the meshed model so that the scaled size is consistent with the preset size.

[0057] For example, in S310, the meshed model is imported into ANSYS Fluent software for further analysis. After importing the model, the following boundary conditions need to be set:

[0058] Setting of the water flow inlet temperature: The water flow inlet temperature is set to 26°C. This temperature is determined according to the actual breeding environment and the heat dissipation requirements of the cold plate. In the high-temperature environment in summer, in order to effectively reduce the temperature of the pig body, the inlet temperature of the coolant is usually set at a relatively low level, but at the same time, the freezing point of the coolant and the corrosion problem of the cold plate need to be considered. Through a large number of experiments and practical applications, it is verified that the water flow inlet temperature of 26°C can balance the stability and economy of the system while ensuring the heat dissipation effect.

[0059] Setting of the water flow inlet gauge pressure: The water flow inlet gauge pressure is set to 0.5 MPa. This pressure value is determined based on the principle of fluid mechanics and the results of on-site measurements. An appropriate inlet pressure can ensure that the coolant has sufficient flow velocity in the cold plate, thereby improving the heat dissipation efficiency. If the inlet pressure is too low, the coolant flow velocity is slow and cannot take away the heat absorbed by the cold plate in time; if the inlet pressure is too high, it will increase the pressure-bearing burden of the cold plate and may cause leakage or damage of the cold plate. Through the study of the heat dissipation performance of the cold plate under different pressure conditions, it is determined that the inlet gauge pressure of 0.5 MPa can ensure the safe and stable operation of the cold plate on the premise of ensuring the heat dissipation effect.

[0060] Porcine body surface temperature setting: Set the porcine body surface temperature to 36.5 °C. This temperature is determined based on the research results in the biomedical field regarding the normal body temperature range of pigs. During the actual breeding process, the body temperature of pigs will fluctuate due to various factors, but 36.5 °C is the average body surface temperature of pigs in a normal physiological state. By setting this temperature, the heat exchange process between the porcine body and the cold plate under normal physiological conditions can be simulated.

[0061] Cold plate material selection: The cold plate is made of 304 stainless steel. 304 stainless steel has excellent heat conduction performance, with a relatively high thermal conductivity, which can quickly transfer the heat absorbed by the cold plate to the coolant. At the same time, 304 stainless steel also has good corrosion resistance and mechanical strength, and can operate stably for a long time in a harsh breeding environment. Compared with other materials, such as aluminum alloy, plastic, etc., 304 stainless steel has obvious advantages in terms of heat dissipation performance and service life.

[0062] Porcine skin thickness setting: Set the porcine skin thickness to 2 mm. As an important barrier between the porcine body and the external environment, the porcine skin has an important impact on the heat transfer process. Through measuring and statistically analyzing the skin thickness of pigs at different growth stages, it is found that the skin thickness of adult pigs is about 2 mm. Therefore, in the present invention, the porcine skin thickness is set to 2 mm to truly reflect the influence of biological tissues on heat transfer.

[0063] For another example, in the analysis of the flow state, the ideal gas state equation and the principle of conservation of energy are used for verification, that is, the flow state is described by the following equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles of gas, and R is the gas constant.

[0064] When analyzing the flow state in the heat exchange process between the porcine body and the contact cold plate, the ideal gas state equation PV = nRT and the principle of conservation of energy are used for verification.

[0065] The ideal gas state equation can be used to analyze the state changes of the dissolved gas that may exist in the coolant or the small amount of gas in the cold plate system. During the flow process of the coolant, parameters such as pressure P and volume V will change. Through this equation, the change relationship of these parameters can be calculated to determine whether the gas state meets the theoretical expectations, thereby assisting in analyzing the rationality of the flow state.

[0066] The principle of energy conservation runs through the entire heat exchange and flow process. In the cold plate system, the coolant absorbs the heat of the pig body, increasing its own energy. At the same time, it will do work against resistance during the flow process, resulting in energy loss. According to the principle of energy conservation, the total energy of the system should remain unchanged. By calculating and analyzing the energy of each part, such as the internal energy and kinetic energy of the coolant and the heat transfer during the heat exchange process, it can be verified whether the energy calculation in the simulation process is accurate, ensuring the energy balance of the entire system and further guaranteeing the accuracy and reliability of the flow state analysis.

[0067] Therefore, in the second embodiment, the preset parameters affecting the heat transfer between the simulated pig body and the simulated cold plate at least include: the water inlet temperature, the water inlet gauge pressure, the surface temperature of the simulated pig body, the material of the simulated cold plate, and the thickness of the pigskin of the simulated pig body.

[0068] In the second embodiment, the parameters affecting the heat dissipation performance of the simulated cold plate at least include: the heat transfer rate;

[0069] The heat transfer rate is expressed by the following formula:

[0070]

[0071] where represents the heat transfer rate; represents the heat transfer coefficient; represents the contact area between the simulated pig body and the simulated cold plate; represents the surface temperature of the simulated pig body; represents the ambient temperature.

[0072] For example, in practical applications, the reference value of the heat transfer coefficient under similar conditions can be obtained by referring to relevant literature, or more accurate values can be determined through experimental measurement; represents the contact area (unit: m 2 ), and it is necessary to accurately calculate the contact area between the pig skin and the cold plate and between the pig skin and the surrounding air in the model, which is crucial for accurately calculating the heat transfer; T skin is the pig skin temperature (unit: K), and T ambient is the ambient temperature (unit: K). These two temperature values will change dynamically during the heat exchange process and need to be monitored and updated in real time during the simulation.

[0073] For example, and continuing with the above example, based on the above boundary condition settings, the thickness and thermal conductivity of the pig skin are important parameters affecting heat transfer. Through a large number of experimental measurements and research statistics, it is determined that the pig skin thickness is set to 2 mm and the thermal conductivity is 0.4 W / (m·K). These two parameters can better reflect the heat conduction characteristics of the actual pig skin.

[0074] The heat transfer rate is calculated by the following formula: Q = k × A × dΔT, where k is the thermal conductivity, d is the skin thickness, (ΔT = T internal −T skin ).

[0075] In heat transfer calculations, the formula Q = k × A × dΔT is used to calculate the heat conducted through the pig skin. Among them, k = 0.4W / (m⋅K) reflects the ability of the pig skin to conduct heat. The larger this value, the faster the pig skin conducts heat under the same conditions; d = 2mm represents the thickness of the heat conduction path. An increase in thickness will increase the thermal resistance and the difficulty of heat transfer; ΔT = Tinternal −T skin is the temperature difference between the inside of the pig body and the skin surface. The larger the temperature difference, the stronger the driving force for heat transfer and the more heat is transferred. By accurately setting these parameters and using this formula for calculation, the conduction process of heat in the pig skin can be more accurately simulated, thereby improving the accuracy of the entire heat exchange simulation.

[0076] In the second embodiment, when the heat transfer efficiency is higher than the preset range, the heat dissipation performance of the simulation cold plate is excessive;

[0077] When the heat transfer efficiency is within the preset range, the heat dissipation performance of the simulation cold plate meets the requirements;

[0078] When the heat transfer efficiency is lower than the preset range, the heat dissipation performance of the simulation cold plate is insufficient.

[0079] For example, the preset range is 50 - 200W.

[0080] If the heat dissipation efficiency of the simulation cold plate is lower than 50W, there are at least the following impacts:

[0081] In terms of the pig body, the pig body cannot release metabolic heat in time through the cold plate, resulting in heat accumulation in the body.

[0082] The basal metabolic heat production of adult pigs at rest is about 50 - 100W. The core temperature of the pig body continuously remains higher than the normal range (36.5°C), causing heat stress, manifested as a decrease in feed intake, an increase in respiratory rate, and a decrease in activity. In severe cases, it may lead to heat stroke or death. Long-term heat stress will reduce the daily weight gain of fattening pigs by 20% - 30% and reduce the reproductive performance of sows (lower conception rate, fewer piglets per litter).

[0083] In terms of the cold plate, the contact area between the pig body and the cold plate is too small (such as A < 0.2m2), or the pig body posture is improper (such as not fully contacting the cold plate when lying on the side), resulting in the actual heat exchange area being much lower than the designed value.

[0084] Or the heat conductivity of the cold plate surface material is poor (not 304 stainless steel), the coolant flow rate is too slow (inlet pressure < 0.5 MPa, resulting in laminar flow rather than turbulent flow), or the hair / dirt on the pig body surface increases the thermal resistance, causing h to decrease significantly (e.g., h < 10W / (m 2 *k)).

[0085] Or the inlet water temperature exceeds 26°C (e.g., ≥ 30°C), or the coolant flow rate is too low, resulting in a decrease in the heat absorption capacity of the cold plate and the inability to effectively remove heat.

[0086] At this time, it is determined that the heat dissipation performance of the simulated cold plate is insufficient, the health risk of the pig group increases, and the medication cost rises; the growth cycle is extended, the feed conversion rate is reduced, and the breeding cost is significantly increased. Adjustments need to be made to it. For example, increase the contact area, optimize the cold plate material / surface treatment, and increase the coolant flow rate (check the inlet pressure).

[0087] If the heat dissipation efficiency of the simulated cold plate is greater than 200W, there are at least the following impacts:

[0088] Regarding the pig body: The pig skin temperature T skin is significantly decreased by the cold plate. If it is lower than the pig body comfort threshold (usually ≥ 30°C), cold stress may be triggered. The pig body maintains the core temperature (36.5°C) by increasing metabolic heat production, resulting in energy waste (feed energy is used for heat production rather than growth), and the growth rate slows down. Low temperature may stimulate the constriction of skin blood vessels, affecting blood circulation, and may lead to local frostbite or decreased immunity in the long term.

[0089] Regarding the cold plate: The inlet water temperature is too low (e.g., < 20°C): Although it can increase the temperature difference ΔT, it may cause cold stimulation to the pig body and is prone to dew condensation on the cold plate surface, increasing the humidity in the pig house and inducing respiratory diseases.

[0090] The inlet pressure is too high (e.g., > 0.5 MPa): The coolant flow rate is too fast, which may cause the cold plate pipes to bear too high pressure, increasing the leakage risk. At the same time, it exacerbates the energy consumption of the water pump and increases the operating cost.

[0091] Or, the cold plate fluid channels are too dense or the material has too strong heat conductivity (such as pure copper), resulting in too fast local heat dissipation, forming uneven temperature gradients, and uneven cold and heat in the pig body contact area.

[0092] At this time, it is determined that the heat dissipation performance of the simulated cold plate is excessive. Excessive heat dissipation requires additional energy consumption to maintain the low temperature or high pressure of the coolant, violating the energy-saving design goal; at the same time, it may increase the maintenance cost due to dew condensation or icing on the cold plate surface. Adjustments need to be made to it at this time. For example, reduce the coolant flow rate / pressure, increase the inlet water temperature (≥ 26°C), and adjust the cold plate structure to avoid local overcooling.

[0093] Example 3:

[0094] Based on the same general inventive concept, in order to further clearly and completely explain the present invention, the present invention also provides Embodiment 3. As Figure 4 shown, in this Embodiment 3, the present invention provides a pig body contact type cold plate heat exchange simulation system, and the pig body contact type cold plate heat exchange simulation system 100 includes:

[0095] A model establishment module, which simulates the three-dimensional models of the pig body and the cold plate;

[0096] A first processing module 110, which is used to perform mesh division on the three-dimensional model to obtain a model after mesh division;

[0097] A second processing module 120, which calibrates the model after mesh division and obtains the boundary settings input by the user based on the model after mesh division;

[0098] A simulation module 120, which is used to obtain preset parameters that affect heat transfer between the simulated pig body and the simulated cold plate, and perform simulation based on the preset parameters and the boundary settings to obtain parameters that affect the heat dissipation performance of the simulated cold plate.

[0099] Embodiment 4:

[0100] Based on the above embodiment, in order to further clearly and completely explain the present invention, the present invention also provides Embodiment 4. As Figure 5 shown, in this Embodiment 4, the first processing module 120 includes:

[0101] A first processing sub-module 121, which is used to import the three-dimensional model into Hypermesh software.

[0102] A division module 122, which is used to divide the simulated pig body and the water flow area by using tetrahedral elements.

[0103] An encryption module 123, which is used to encrypt the contact area between the simulated pig body and the simulated cold plate, the contact area between the simulated cold plate and the water flow, the water flow inlet and the water flow outlet by using triangular surface meshes.

[0104] An iterative monitoring module 124, which is used to perform iterative optimization on the mesh, adjust the mesh size, shape and distribution, and monitor and evaluate the mesh quality, and output a model after mesh division with qualified evaluation.

[0105] The second processing module 130 includes:

[0106] A transmission sub-module 131, which inputs the model after mesh division into ANSYS Fluent software.

[0107] The second processing sub-module 132 is configured to determine the size of the meshes in the model after mesh division, compare the size with a preset size, and when the comparison is inconsistent, scale the model after mesh division so that the scaled size is consistent with the preset size.

[0108] It should be understood that in various embodiments of the present invention, the sequence numbers of the above processes do not indicate the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0109] In addition, the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0110] It should be understood that in the embodiments of the present invention, "B corresponding to A" means that B is associated with A, and B can be determined according to A. However, it should also be understood that determining B according to A does not mean determining B only according to A, and B can also be determined according to A and / or other information.

[0111] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed in this article can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0112] Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices, and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be elaborated herein.

[0113] In several embodiments provided by this application, it should be understood that the disclosed systems, devices, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Additionally, the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices, or units, or can also be electrical, mechanical, or other forms of connection.

[0114] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or can also be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiments of the present invention.

[0115] Furthermore, in each embodiment of the present invention, the functional units can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0116] Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by hardware, or by firmware, or by a combination thereof. When implemented in software, the above functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes computer storage media and communication media, where the communication media includes any medium that facilitates the transfer of a computer program from one place to another. The storage media can be any available medium that can be accessed by a computer. By way of example but not limitation: the computer-readable medium can include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. In addition, any connection can suitably be a computer-readable medium. For example, if the software is transmitted using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave from a website, server or other remote source, then the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, wireless and microwave are included in the definition of the medium. As used in the present invention, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks generally reproduce data magnetically, while discs reproduce data optically with a laser. The above combinations should also be included within the scope of protection of the computer-readable medium.

[0117] In summary, the above description is only a preferred embodiment of the technical solution of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A simulation method for heat exchange of a pig body contact cold plate, characterized in that, It includes the following steps: Construct a three-dimensional model including a simulated pig body and a simulated cold plate; Perform mesh division on the three-dimensional model to obtain a meshed model; Calibrate the meshed model and obtain the boundary settings input by the user based on the meshed model; Obtain preset parameters affecting heat transfer between the simulated pig body and the simulated cold plate, and perform simulation based on the preset parameters and the boundary settings to obtain parameters affecting the heat dissipation performance of the simulated cold plate, so as to evaluate the heat dissipation performance of the simulated cold plate.

2. The pig body contact type cold plate heat exchange simulation method according to claim 1, characterized in that The three-dimensional model at least includes the contact area between the simulated pig body and the simulated cold plate, the water flow area, the contact area between the simulated cold plate and the water flow, the water flow inlet, and the water flow outlet.

3. The pig body contact type cold plate heat exchange simulation method according to claim 2, wherein, The performing mesh division on the three-dimensional model to obtain a meshed model includes: Import the three-dimensional model into Hypermesh software; Use tetrahedral elements to divide the simulated pig body and the water flow area; Use triangular surface meshes to encrypt the contact area between the simulated pig body and the simulated cold plate, the contact area between the simulated cold plate and the water flow, the water flow inlet, and the water flow outlet; Iteratively optimize the above division results and adjust the mesh size, shape, and distribution; Monitor and evaluate the mesh quality and output a qualified meshed model.

4. The pig body contact type cold plate heat exchange simulation method according to claim 1, characterized in that The calibrating the meshed model includes: Input the meshed model into ANSYS Fluent software; Obtain the size of the meshed grid in the meshed model, compare this size with the preset size, and when the comparison is inconsistent, scale the meshed model so that the scaled size is consistent with the preset size.

5. The pig body contact type cold plate heat exchange simulation method according to claim 1, characterized in that The preset parameters affecting heat transfer between the simulated pig body and the simulated cold plate at least include: water flow inlet temperature, water flow inlet gauge pressure, simulated pig body surface temperature, simulated cold plate material, and simulated pig body skin thickness.

6. The pig body contact type cold plate heat exchange simulation method according to claim 1, characterized in that, The parameters affecting the heat dissipation performance of the simulated cold plate at least include: heat transfer rate; The heat transfer rate is expressed by the following formula: Among them, represents the heat transfer rate; represents the heat transfer coefficient; represents the contact area between the simulated pig body and the simulated cold plate; represents the surface temperature of the simulated pig body; represents the ambient temperature.

7. The method for simulating heat exchange of a pig body contact cold plate according to claim 6, characterized in that The evaluating the heat dissipation performance of the simulated cold plate includes: When the heat transfer efficiency is higher than the preset range, the heat dissipation performance of the simulated cold plate is excessive; When the heat transfer efficiency is within the preset range, the heat dissipation performance of the simulated cold plate meets the requirements; When the heat transfer efficiency is lower than the preset range, the heat dissipation performance of the simulated cold plate is insufficient.

8. A pig body contact type cold plate heat exchange simulation system, characterized in that, It includes: A model establishment module, a three-dimensional model of a simulated pig body and a simulated cold plate; A first processing module for performing mesh division on the three-dimensional model to obtain a meshed model; A second processing module for calibrating the meshed model and obtaining the boundary settings input by the user based on the meshed model; A simulation module for obtaining preset parameters affecting heat transfer between the simulated pig body and the simulated cold plate, and performing simulation based on the preset parameters and the boundary settings to obtain parameters affecting the heat dissipation performance of the simulated cold plate.

9. The pig body contact type cold plate heat exchange simulation system according to claim 8, characterized in that, The first processing module includes: A first processing sub-module for importing the three-dimensional model into Hypermesh software; A partitioning module for partitioning the simulated pig body and the water flow area using tetrahedral elements; An encryption module for encrypting the contact area between the simulated pig body and the simulated cold plate, the contact area between the simulated cold plate and the water flow, the water flow inlet, and the water flow outlet using triangular surface meshes; An iterative monitoring module for iteratively optimizing the mesh, adjusting the mesh size, shape, and distribution, monitoring and evaluating the mesh quality, and outputting the model after mesh partitioning with qualified evaluation.

10. The pig body contact type cold plate heat exchange simulation system according to claim 8, characterized in that, The second processing module includes: A transmission sub-module for inputting the model after mesh partitioning into ANSYS Fluent software; A second processing sub-module for sizing the meshes in the model after mesh partitioning, comparing the size with a preset size, and when the comparison is inconsistent, scaling the model after mesh partitioning so that the scaled size is consistent with the preset size.

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