TPMS (Tire Pressure Monitor System)-based heat exchanger design method, device, equipment and medium

Abstract

The invention relates to a TPMS-based heat exchanger design method, device, equipment and medium, and belongs to the technical field of porous materials.The TPMS-based heat exchanger design method comprises the steps that an implicit function expression of a TPMS is determined, a TPMS curved surface is constructed based on the implicit function expression, the TPMS curved surface is deviated by a preset deviation amount towards one side or two sides, a first TPMS entity structure is obtained, and a second TPMS entity structure is obtained; with the maximum structural strength and light weight of the heat exchanger as targets, parameters of the implicit function expression of the first TPMS entity structure are subjected to gradient adjustment through a Ramp function, and a second TPMS entity structure is obtained; the optimal performance of the heat exchanger serves as the target, smooth transition is conducted on the fusion area in the second TPMS entity structure through the Sigmoid function so as to complete the design of the heat exchanger, the heat dissipation efficiency and the structural strength of the heat exchanger are improved, and the pressure drop of the heat exchanger is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of porous materials, and in particular to a TPMS-based heat exchanger design method, device, equipment and medium. Background Art

[0002] With the rapid development of industrialization and science and technology, heat exchangers, as key heat transfer equipment, are widely used in energy, chemical industry, HVAC and other fields. Although the existing super-structure heat exchanger design method has made certain progress in improving heat exchange efficiency, it still has many technical defects and limitations, which limit the performance and application scope of heat exchangers under complex working conditions.

[0003] There is a contradiction between heat transfer efficiency and pressure drop in existing heat exchangers. Traditional designs improve heat transfer efficiency by increasing the heat transfer surface area and introducing spoiler elements, but this method often increases the pressure loss of the fluid, resulting in increased system energy consumption; there are design complexity and optimization difficulties. The geometric shape of the TPMS structure is complex, involving periodic surfaces in three-dimensional space, making the design and optimization process very complicated; there are problems with structural strength and durability. Although the TPMS structure has excellent heat transfer performance and fluid dynamics, its structural strength and durability may still be insufficient in certain application scenarios, especially in high-pressure, high-temperature or corrosive environments. The mechanical strength and material durability of the TPMS structure may not meet the requirements of long-term use. There are problems with uneven fluid distribution and local thermal resistance. The complex geometric shape of the TPMS structure may cause uneven distribution of the fluid during the flow process, forming local hot spots or cold spots, thereby affecting the overall heat transfer performance. There are problems with thermal stress and thermal expansion management. Under high-temperature working conditions, the TPMS structure may produce large thermal stress and thermal expansion, affecting the stability and heat transfer efficiency of the structure. Summary of the invention

[0004] In view of this, it is necessary to provide a TPMS-based heat exchanger design method, device, equipment and medium to solve the technical problems of defects in heat transfer performance, pressure drop and structural limitations of the heat exchanger.

[0005] In order to solve the above problems, the present invention provides a heat exchanger design method based on TPMS, comprising: Determine an implicit function expression of the TPMS, construct a TPMS curved surface based on the implicit function expression, and offset the TPMS curved surface to one side or both sides by a preset offset amount to obtain a first TPMS physical structure; With the goal of maximizing the structural strength and lightening the heat exchanger, a ramp function is used to gradiently adjust the parameters of the implicit function expression of the first TPMS entity structure to obtain a second TPMS entity structure; With the goal of optimizing the performance of the heat exchanger, a Sigmoid function is used to smoothly transition the fusion area in the second TPMS entity structure to complete the design of the heat exchanger.

[0006] In a possible implementation manner, the implicit function expressions of the TPMS include Gyroid, SchwarzPrimitive, Diamond, Lidinoid, Split P, and Neovius.

[0007] In a possible implementation, the calculation formula of Gyroid is: , in, To control the offset of the surface, For a point in space in three-dimensional space Axis coordinates, For a point in space in three-dimensional space Axis coordinates, For a point in space in three-dimensional space Axis coordinates; The calculation formula of the Schwarz Primitive is: , The calculation formula of Diamond is: , The calculation formula of Lidinoid is: , The calculation formula of Split P is: , The calculation formula of Neovius is: .

[0008] In a possible implementation, constructing a TPMS surface based on the implicit function expression, offsetting the TPMS surface to one side or both sides by a preset offset, and obtaining a first TPMS physical structure includes: Determine multiple types of TPMS units based on the implicit function expression, consider the heat dissipation efficiency and pressure drop of the heat exchanger, select different types of TPMS units for combined design, and construct the TPMS surface; The TPMS curved surface is offset to one side or both sides by a preset offset amount to obtain a first TPMS physical structure.

[0009] In a possible implementation, the step of using a Ramp function to perform gradient adjustment on the parameters of the implicit function expression of the first TPMS entity structure to obtain the second TPMS entity structure includes: The frequency, C value and amplitude of the implicit function expression of the first TPMS entity structure are adjusted in a gradient manner using a Ramp function to obtain a second TPMS entity structure with different unit sizes, wall thicknesses or porosities and pore sizes.

[0010] In a possible implementation, the calculation formula of the Ramp function is: , in, is the Ramp function, is the minimum value of the change in the unit cell size of the TPMS structure, is the maximum value of the change in the unit cell size of the TPMS structure, is the initial position of the gradient change, is the end position of the gradient change, For variables in Axis coordinates.

[0011] In a possible implementation, the calculation formula of the Sigmoid function is: , in, is the Sigmoid function, is the fusion area between the two TPMS surfaces, is the width between the two TPMS transition areas.

[0012] On the other hand, the present invention also provides a heat exchanger design device based on TPMS, comprising: A physical structure acquisition module, used for determining an implicit function expression of the TPMS, constructing a TPMS curved surface based on the implicit function expression, and offsetting the TPMS curved surface to one side or both sides by a preset offset to obtain a first TPMS physical structure; an adjustment module, for obtaining a second TPMS entity structure by gradiently adjusting the parameters of the implicit function expression of the first TPMS entity structure using a ramp function with the goal of maximizing the structural strength and lightening the heat exchanger; The heat exchanger design module is used to achieve the optimal performance of the heat exchanger by using a Sigmoid function to smoothly transition the fusion area in the second TPMS entity structure to complete the heat exchanger design.

[0013] In another aspect, the present invention further provides an electronic device, comprising: a processor and a memory; The memory stores a computer-readable program executable by the processor; When the processor executes the computer-readable program, the steps in the TPMS-based heat exchanger design method as described above are implemented.

[0014] On the other hand, the present invention also provides a computer-readable storage medium, which stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the TPMS-based heat exchanger design method as described above.

[0015] The beneficial effects of the present invention are as follows: a TPMS surface is constructed based on an implicit function expression, and the TPMS surface is offset to one side or both sides by a preset offset to obtain a first TPMS entity structure. By constructing the TPMS entity structure, the heat dissipation performance is improved while reducing the pressure loss. Different TPMS units are seamlessly integrated in a specific area, and the heat dissipation efficiency of heat conduction and convection is improved. The parameters of the implicit function expression of the first TPMS entity structure are gradient-adjusted by a Ramp function to obtain a second TPMS entity structure, thereby ensuring the geometric accuracy and structural strength of the radiator, improving the uneven distribution of the cooling fluid to make the heat dissipation more uniform, and using a Sigmoid function to smoothly transition the fusion area in the second TPMS entity structure to complete the heat exchanger design. By adjusting the internal fusion area, the design flexibility is improved. By adjusting the distribution and arrangement of different TPMS units, the pressure drop is further reduced while the heat dissipation performance is enhanced, and the heat dissipation efficiency is higher and the pressure drop is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A flow chart of an embodiment of a heat exchanger design method based on TPMS provided by the present invention; Figure 2a A schematic diagram of a gradient structure of a heat exchanger design method based on TPMS provided by the present invention; Figure 2b A schematic diagram of another gradient structure of the TPMS-based heat exchanger design method provided by the present invention; Figure 3a A schematic diagram of the integrated structure of the TPMS-based heat exchanger design method provided by the present invention; Figure 3b Another fusion structure schematic diagram of the TPMS-based heat exchanger design method provided by the present invention; Figure 4 A schematic diagram of the fusion area of ​​the TPMS-based heat exchanger design method provided by the present invention; Figure 5 A schematic diagram of a simulation model of a heat exchanger design method based on TPMS provided by the present invention; Figure 6 A schematic structural diagram of an embodiment of a heat exchanger design device based on TPMS provided by the present invention; Figure 7 A schematic structural diagram of an embodiment of an electronic device provided by the present invention. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0018] The present invention discloses a TPMS-based heat exchanger design method, device, equipment and medium, which can be used in a computer. The method, device or computer-readable storage medium involved in the present invention can be integrated with the above-mentioned device or can be relatively independent.

[0019] A specific embodiment of the present invention discloses a heat exchanger design method based on TPMS, which can be executed by a computer, specifically by one or more processors of the computer. Figure 1 As shown in the figure, the heat exchanger design method based on TPMS includes: S101, determining an implicit function expression of the TPMS, constructing a TPMS curved surface based on the implicit function expression, offsetting the TPMS curved surface to one side or both sides by a preset offset amount, and obtaining a first TPMS physical structure; S102, with the goal of maximizing the structural strength and lightening the heat exchanger, using a Ramp function to perform gradient adjustment on the parameters of the implicit function expression of the first TPMS entity structure to obtain a second TPMS entity structure; S103, with the goal of optimizing the performance of the heat exchanger, a Sigmoid function is used to smoothly transition the fusion area in the second TPMS entity structure to complete the design of the heat exchanger.

[0020] Among them, three-periodic minimal surface (TPMS), as a metastructure with unique geometric properties, shows great potential for application in heat exchanger design. TPMS structure has high specific surface area, good fluid dynamics and excellent mechanical properties, which can effectively improve the heat transfer efficiency and structural stability of the heat exchanger. By introducing TPMS structure into the heat exchanger and combining it with multi-dimensional gradient sequence design, efficient heat transfer can be achieved in different directions while reducing pressure loss and manufacturing cost.

[0021] Compared with the prior art, the TPMS-based heat exchanger design method provided in this embodiment determines the implicit function expression of the TPMS, constructs the TPMS surface based on the implicit function expression, offsets the TPMS surface to one side or both sides by a preset offset, and obtains the first TPMS entity structure. By constructing the TPMS entity structure, the heat dissipation performance is improved while reducing the pressure loss, and different TPMS units are seamlessly integrated in a specific area, thereby improving the heat conduction and convection heat dissipation efficiency; with the goal of maximizing the structural strength and lightweight of the heat exchanger, the parameters of the implicit function expression of the first TPMS entity structure are gradiently adjusted by using the Ramp function to obtain the second TPMS entity structure, thereby ensuring the geometric accuracy and structural strength of the radiator, improving the uneven distribution of the cooling fluid and making the heat dissipation more uniform; with the goal of optimizing the performance of the heat exchanger, the Sigmoid function is used to smoothly transition the fusion area in the second TPMS entity structure to complete the heat exchanger design, and by adjusting the distribution and arrangement of different TPMS units, the pressure drop is further reduced while the heat dissipation performance is enhanced, thereby having higher heat dissipation efficiency and lower pressure drop.

[0022] In some embodiments, in step S101, an implicit function expression of the TPMS is determined, and the implicit function expression of the TPMS includes Gyroid, Schwarz Primitive, Diamond, Lidinoid, Split P, and Neovius, and the calculation formula of Gyroid is: , in, To control the offset of the surface, For a point in space in three-dimensional space Axis coordinates, For a point in space in three-dimensional space Axis coordinates, For a point in space in three-dimensional space Axis coordinates; The calculation formula of Schwarz Primitive is: , The calculation formula for Diamond is: , The calculation formula of Lidinoid is: , The calculation formula for Split P is: , Neovius's calculation formula is: ; A TPMS surface is constructed based on an implicit function expression, multiple types of TPMS units are determined based on the implicit function expression of the TPMS, and different types of TPMS units are selected for combined design in consideration of the heat dissipation efficiency and pressure drop of the heat exchanger to construct the TPMS surface. The TPMS surface is offset to obtain a first TPMS entity structure, that is, the TPMS surface is thickened by offsetting the TPMS surface to one side or both sides by a preset offset amount to obtain the TPMS entity structure.

[0023] In some embodiments, in step S102, with the goal of maximizing the structural strength and lightweight of the heat exchanger, the parameters of the implicit function expression of the first TPMS entity structure are gradient-adjusted using a Ramp function to obtain a second TPMS entity structure, that is, the frequency, C value, and amplitude of the implicit function expression of the first TPMS entity structure are gradient-adjusted using a Ramp function to obtain a second TPMS entity structure with different unit sizes, wall thicknesses or porosities, and pore sizes. By adjusting the parameters of the implicit function expression of the first TPMS entity structure, the frequency, C value, and amplitude of the TPMS function are gradient-adjusted to obtain different unit sizes, wall thicknesses or porosities, and pore sizes. TPMS physical structure with different unit sizes, wall thickness or porosity and pore diameter. Since the TPMS structure needs to ensure strength and lightweight design, the structural strength is enhanced by increasing the wall thickness in areas subjected to high stress or high heat load to prevent structural failure caused by thermal stress or mechanical stress; reducing the wall thickness in low stress areas can reduce the overall weight of the radiator and save materials without affecting the structural strength. The frequency, C value and amplitude of the TPMS function can be adjusted using the Ramp function to obtain TPMS physical structures with different unit sizes, wall thickness or porosity and pore diameters, that is, gradient structures. For a schematic diagram of the gradient structure, please refer to Figure 2a , Figure 2b ; Realize gradient unit size, wall thickness, porosity and pore size, etc., accurately control different areas through Ramp function, improve uneven distribution of cooling fluid and make heat dissipation more uniform; The frequency parameter in the Schwarz Primitive surface equation is designed to be a linear gradient change through the Ramp function. The calculation formula of the Schwarz Primitive surface equation is: , in, is the Schwarz Primitive surface equation, , , is the frequency parameter, C is the offset of the control surface, Follow Direction Range from Gradually changes to , Follow Direction Range from Gradually changes to , Follow Direction Range from Gradually changes to , , , The cycle of TPMS, i.e. the size of TPMS structural unit, can be controlled; coordinate The calculation formula of the variable ramp function is: , in, is the Ramp function, is the minimum value of the change in the unit cell size of the TPMS structure, is the maximum value of the change in the unit cell size of the TPMS structure, is the initial position of the gradient change, is the end position of the gradient change, For variables in Axis coordinates; Using the Ramp function, we can express the position-dependent parameter changes, specifically: , , , The unit cell size of the TPMS structure is The minimum value of the axis change, The unit cell size of the TPMS structure is The maximum value of the axis change, The unit cell size of the TPMS structure is The minimum value of the axis change, The unit cell size of the TPMS structure is The maximum value of the axis change, The unit cell size of the TPMS structure is The minimum value of the axis change, The unit cell size of the TPMS structure is Maximum value of axis variation; Substituting the position-dependent parameters into the Schwarz Primitive surface equation, we get: , in, is the adjusted Schwarz Primitive surface equation.

[0024] In some embodiments, in step S103, with the goal of optimizing the performance of the heat exchanger, a Sigmoid function is used to smoothly transition the fusion area in the second TPMS physical structure to complete the heat exchanger design. In order to further optimize the performance of the heat exchanger, different TPMS lattice structures are fused in the second TPMS physical structure of the heat exchanger, that is, different types of TPMS units are assigned to various areas in the mixed lattice through the Sigmoid function (continuous function). For example, a Diamond structure with high heat dissipation performance is used in a heat concentrated area, and a Gyroid structure is used in an area with large flow resistance. For a schematic diagram of the fusion structure, please refer to Figure 3a , Figure 3b For a schematic diagram of the fusion area, please refer to Figure 4 ,During the fusion process, in order to avoid non-intersection of each cross section, different TPMS topologies are assigned to each region in the hybrid lattice through the weight function, and then Sigmoid is used to smoothly transition the boundaries of the two different TPMS equations to obtain the fused TPMS heat dissipation design to complete the heat exchanger design; The calculation formula of its weight function is: , in, is the weight function, representing the TPMS structure, , For different TPMS implicit expression functions, is the spatial weighting function, The value of varies between 0 and 1; The calculation formula of the Sigmoid function is: , in, is the Sigmoid function, is the fusion area between the two TPMS surfaces, is the width between the two TPMS transition areas, the larger The smaller the value, the faster the transition. Higher values ​​will produce smoother transitions.

[0025] In some embodiments, the designed heat exchanger is simulated. For a schematic diagram of a simulation model of a heat exchanger based on a TPMS structure, see Figure 5 An optimization model with the goal of large heat transfer coefficient and small pressure drop was established. The structural dimensions were designed as a fused cubic porous structure with a length, width and height of 20 mm. In order to fully develop the fluid at the inlet and outlet and transfer heat more efficiently, the fluid domain was set to The closed flow channel, the tube wall is set to a no-slip condition, and a constant heat flux is set on one side. , 300K cooling air flows in from the inlet, and the rest of the outer wall is set to adiabatic conditions. The materials are selected from aluminum alloy, stainless steel, etc. Since the heat dissipation device is in a stable state under working conditions, the calculation is based on steady-state conditions; at the same time, according to the actual flow and heat transfer conditions, the following assumptions are made: when the calculation condition is within the laminar flow range, the laminar flow model is used; if the calculation condition is within the turbulent flow range, the SST (shear stress) turbulence model is used; the medium is air, which has very low compressibility and its effect on heat transfer and flow can be ignored, so it is assumed that the fluid is incompressible; the influence of gravity is not considered; the influence of surface tension is not considered; the solid physical properties are constant, and the fluid physical properties change with temperature; based on the above assumptions, the control equation can be simplified to: The continuity equation is: , Momentum equation: , Energy equation: , The heat conduction equation is: , in, is the density, For speed, For pressure, is the thermal conductivity, is the specific heat capacity at constant pressure, is temperature; The numerical simulation finite element method is used to calculate the heat transfer characteristics of different structures. Since the D, G, and P structures have their own advantages in heat transfer, permeability, pressure drop, etc., the designed fusion structure can integrate the characteristics of multiple units to ensure good heat transfer performance while further reducing the pressure drop. According to the simulation cloud map, the heat dissipation, mass transfer and other performances of the TPMS fusion structure of the designed heat exchanger are evaluated to achieve the maximum heat transfer efficiency and the minimum pressure drop. The structural parameters are reasonably adjusted and analyzed to obtain the most ideal optimization effect.

[0026] In order to better implement the heat exchanger design method based on TPMS in the embodiment of the present invention, based on the heat exchanger design method based on TPMS, correspondingly, Figure 6 As shown, the embodiment of the present invention further provides a heat exchanger design device based on TPMS. The heat exchanger design device based on TPMS 600 includes: A physical structure acquisition module 601 is used to determine an implicit function expression of the TPMS, consider the heat dissipation efficiency of the heat exchanger, construct a TPMS surface based on the implicit function expression, and offset the TPMS surface to one side or both sides by a preset offset to obtain a first TPMS physical structure; An adjustment module 602 is used to adjust the parameters of the implicit function expression of the first TPMS entity structure by using a ramp function with the goal of maximizing the structural strength and lightening the heat exchanger, so as to obtain a second TPMS entity structure; The heat exchanger design module 603 is used to achieve the optimal performance of the heat exchanger by using a Sigmoid function to smoothly transition the fusion area in the second TPMS entity structure to complete the heat exchanger design.

[0027] like Figure 7 As shown, the present invention also provides an electronic device 700 , which can be a computing device such as a mobile terminal, a desktop computer, a notebook, a palmtop computer, a server, etc. The electronic device 700 includes a processor 701 , a memory 702 , and a display 703 . Figure 7 Only some components of the electronic device 700 are shown, but it should be understood that it is not required to implement all of the components shown, and more or fewer components may be implemented instead.

[0028] In some embodiments, the memory 702 may be an internal storage unit of the electronic device 700, such as a hard disk or memory of the electronic device 700. In other embodiments, the memory 702 may also be an external storage device of the electronic device 700, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 700. Further, the memory 702 may also include both an internal storage unit of the electronic device 700 and an external storage device. The memory 702 is used to store application software and various data installed in the electronic device 700, such as program codes installed in the electronic device 700. The memory 702 may also be used to temporarily store data that has been output or is to be output. In one embodiment, a heat exchanger design program based on TPMS is stored on the memory 702, and the heat exchanger design program based on TPMS can be executed by the processor 701, thereby realizing the heat exchanger design method based on TPMS of each embodiment of the present invention.

[0029] In some embodiments, the processor 701 may be a central processing unit (CPU), a microprocessor or other data processing chip, and is used to run program codes or process data stored in the memory 702, such as a heat exchanger design method based on TPMS.

[0030] In some embodiments, the display 703 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 703 is used to display identification information of the TPMS-based heat exchanger design program and to display a visual user interface. The components 701-703 of the electronic device 700 communicate with each other via a system bus.

[0031] In some embodiments, when the processor 701 executes the TPMS-based heat exchanger design program in the memory 702, the various steps in the TPMS-based heat exchanger design method described in the above embodiments are implemented. Since the TPMS-based heat exchanger design method has been described in detail above, it will not be repeated here.

[0032] Accordingly, the present invention also provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the steps or functions of the TPMS-based heat exchanger design method provided in the above-mentioned method embodiments can be implemented.

[0033] In summary, the TPMS-based heat exchanger design method, device, equipment and medium provided by the present invention determine the implicit function expression of the TPMS, construct the TPMS surface based on the implicit function expression, offset the TPMS surface to one side or both sides by a preset offset, and obtain the first TPMS entity structure; with the goal of maximizing the structural strength and lightweight of the heat exchanger, the Ramp function is used to gradiently adjust the parameters of the implicit function expression of the first TPMS entity structure to obtain the second TPMS entity structure; with the goal of optimizing the performance of the heat exchanger, the Sigmoid function is used to smoothly transition the fusion area in the second TPMS entity structure to complete the heat exchanger design, thereby improving the heat dissipation efficiency and structural strength of the heat exchanger and reducing the pressure drop of the heat exchanger.

[0034] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A heat exchanger design method based on TPMS, characterized in that: include: Determine an implicit function expression of the TPMS, construct a TPMS curved surface based on the implicit function expression, and offset the TPMS curved surface to one side or both sides by a preset offset amount to obtain a first TPMS physical structure; With the goal of maximizing the structural strength and lightening the heat exchanger, a ramp function is used to gradiently adjust the parameters of the implicit function expression of the first TPMS entity structure to obtain a second TPMS entity structure; With the goal of optimizing the performance of the heat exchanger, a Sigmoid function is used to smoothly transition the fusion area in the second TPMS entity structure to complete the design of the heat exchanger.

2. The heat exchanger design method based on TPMS according to claim 1, characterized in that: The implicit function expressions of the TPMS include Gyroid, Schwarz Primitive, Diamond, Lidinoid, Split P, and Neovius.

3. The heat exchanger design method based on TPMS according to claim 2, characterized in that: The calculation formula of Gyroid is: ， in, To control the offset of the surface, For a point in space in three-dimensional space Axis coordinates, For a point in space in three-dimensional space Axis coordinates, For a point in space in three-dimensional space Axis coordinates; The calculation formula of the Schwarz Primitive is: ， The calculation formula of Diamond is: ， The calculation formula of Lidinoid is: ， The calculation formula of Split P is: ， The calculation formula of Neovius is: 。 4. The heat exchanger design method based on TPMS according to claim 3, characterized in that: The step of constructing a TPMS surface based on the implicit function expression, and offsetting the TPMS surface to one side or both sides by a preset offset to obtain a first TPMS entity structure includes: Determine multiple types of TPMS units based on the implicit function expression, consider the heat dissipation efficiency and pressure drop of the heat exchanger, select different types of TPMS units for combined design, and construct the TPMS surface; The TPMS curved surface is offset to one side or both sides by a preset offset amount to obtain a first TPMS physical structure.

5. The heat exchanger design method based on TPMS according to claim 4, characterized in that: The step of using a ramp function to perform gradient adjustment on the parameters of the implicit function expression of the first TPMS entity structure to obtain the second TPMS entity structure includes: The frequency, C value and amplitude of the implicit function expression of the first TPMS entity structure are adjusted in a gradient manner using a Ramp function to obtain a second TPMS entity structure with different unit sizes, wall thicknesses or porosities and pore sizes.

6. The heat exchanger design method based on TPMS according to claim 5, characterized in that: The calculation formula of the Ramp function is: , in, is the Ramp function, is the minimum value of the change in the unit cell size of the TPMS structure, is the maximum value of the change in the unit cell size of the TPMS structure, is the initial position of the gradient change, is the end position of the gradient change, For variables in Axis coordinates.

7. The heat exchanger design method based on TPMS according to claim 6, characterized in that: The calculation formula of the Sigmoid function is: ， in, is the Sigmoid function, is the fusion area between the two TPMS surfaces, is the width between the two TPMS transition areas.

8. A heat exchanger design device based on TPMS, characterized in that: include: A physical structure acquisition module, used for determining an implicit function expression of the TPMS, constructing a TPMS curved surface based on the implicit function expression, and offsetting the TPMS curved surface to one side or both sides by a preset offset to obtain a first TPMS physical structure; an adjustment module, for obtaining a second TPMS entity structure by gradiently adjusting the parameters of the implicit function expression of the first TPMS entity structure using a ramp function with the goal of maximizing the structural strength and lightening the heat exchanger; The heat exchanger design module is used to achieve the optimal performance of the heat exchanger by using a Sigmoid function to smoothly transition the fusion area in the second TPMS entity structure to complete the heat exchanger design.

9. An electronic device, characterized in that: including memory and processor; The memory stores a computer-readable program executable by the processor; When the processor executes the computer-readable program, the processor implements the steps in the TPMS-based heat exchanger design method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement the steps in the TPMS-based heat exchanger design method as described in any one of claims 1-7.

Images