Heat exchanger internal structure model design method, device, equipment and storage medium

Abstract

The application relates to the technical field of heat exchanger design, in particular to a heat exchanger internal structure model design method, device and equipment and a storage medium, wherein the method comprises the following steps: determining a target first segmentation wall and a target second segmentation wall based on a design area and selected thick-wall cells; determining a target first fluid domain and a fluid domain overlap area based on selected non-thick-wall cells, the design area and a center surface size offset; determining a target second fluid domain based on the fluid domain overlap area, the target first fluid domain and the target second segmentation wall; and determining a target third fluid domain based on the design area, the target first segmentation wall and the fluid domain overlap area. The application facilitates improving the heat exchange efficiency, heat exchange uniformity and service life of the heat exchanger.

Description

Technical Field

[0001] This application relates to the field of heat exchanger design technology, and in particular to a method, apparatus, equipment and storage medium for designing a heat exchanger internal structure model. Background Technology

[0002] Heat exchangers are indispensable equipment in modern industry and life. Their core function is to transfer energy between two or more fluids (liquid or gas), effectively dissipating heat and improving the stability of equipment operation.

[0003] Before manufacturing a heat exchanger, an internal structural model must be designed. Currently, the internal structural model of a heat exchanger is generally designed with two flow channels and one partition wall.

[0004] However, in practical applications, it has been found that the heat exchangers manufactured according to the internal structure model of the heat exchanger designed above have poor heat exchange efficiency and heat exchange uniformity, and the poor heat exchange uniformity will further lead to a shorter service life of the heat exchanger. Summary of the Invention

[0005] To facilitate the improvement of heat exchange efficiency, heat exchange uniformity, and service life of heat exchangers, this application provides a method, apparatus, equipment, and storage medium for designing an internal structure model of a heat exchanger.

[0006] In a first aspect, this application provides a method for designing a heat exchanger internal structure model, including:

[0007] Based on the design region and the selected thick-walled unit cell, the target first dividing wall and the target second dividing wall are determined;

[0008] Based on the selected thick-walled unit cell, the design region, and the center plane size offset, the overlapping region between the target first fluid domain and the fluid domain is determined.

[0009] The target second fluid domain is determined based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall;

[0010] Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, the target third fluid domain is determined.

[0011] Secondly, this application provides a device for designing a heat exchanger internal structure model, comprising:

[0012] The dual-segmentation wall determination module is used to determine the target first segmentation wall and the target second segmentation wall based on the design region and the selected thick-walled unit cell;

[0013] The first fluid domain determination module is used to determine the overlapping area between the target first fluid domain and the fluid domain based on the selected thick-walled unit cell, the design region, and the center plane size offset.

[0014] The second fluid domain determination module is used to determine the target second fluid domain based on the fluid domain overlap region, the target first fluid domain, and the target second dividing wall;

[0015] The third fluid domain determination module is used to determine the target third fluid domain based on the design area, the overlapping area of ​​the target first dividing wall and the fluid domain.

[0016] Thirdly, this application provides a computer device, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the method described above.

[0017] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps in the above-described method.

[0018] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the steps in any of the above method embodiments.

[0019] The aforementioned heat exchanger internal structure model design method, apparatus, equipment, and storage medium determine the target first dividing wall and the target second dividing wall based on the design region and the selected thick-walled unit cell; determine the target first fluid domain and the fluid domain overlap region based on the selected non-thick-walled unit cell, the design region, and the center plane size offset; determine the target second fluid domain based on the fluid domain overlap region, the target first fluid domain, and the target second dividing wall; and determine the target third fluid domain based on the design region, the target first dividing wall, and the fluid domain overlap region. In the above implementation, firstly, thick-walled unit cells are used to fill the design region, generating two dividing walls. These two dividing walls separate the remaining space of the design region into three independent spaces, facilitating the subsequent flow channel design in each independent space. Further, one of the independent spaces is filled with non-thick-walled unit cells to form the first flow channel (first fluid domain). Then, a fluid domain overlap region containing the first fluid domain, the target second dividing wall, and the second flow channel (second fluid domain) is generated using non-thick-walled unit cells. By performing a Boolean operation between the fluid domain overlap region and the first fluid domain and the target second dividing wall, the second fluid domain is obtained. The design region consists of two dividing walls and three fluid domains, that is, it consists of the target first dividing wall and the fluid domain overlap region. Therefore, by combining the design region with the target second dividing wall… By performing Boolean operations on the overlapping areas of the partition wall and the fluid domain, the third flow channel, i.e., the third fluid domain, can be calculated. At this point, the design of the internal structure model of the heat exchanger can be completed in the design area. The internal structure model of the heat exchanger includes two partition walls and three fluid domains. Compared with the prior art, this application adds a partition wall and a fluid domain to the internal structure of the heat exchanger. The two partition walls can be used to separate three flow channel areas, and then the corresponding fluid domains (flow channels) are determined in the three flow channel areas respectively. In this way, the heat exchanger subsequently manufactured based on the internal structure model of the heat exchanger can be a three-flow channel heat exchanger. The additional flow channel can enable the heat exchanger to have an additional medium transmission function, thereby improving the heat exchange efficiency and heat exchange uniformity, and further improving the service life of the heat exchanger.

[0020] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a flowchart illustrating a design method for an internal structure model of a heat exchanger provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of a design area provided in an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of a thick-walled unit cell provided in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of a first partition wall provided in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of a combination of a first target partition wall and a second target partition wall provided in an embodiment of this application;

[0027] Figure 6 This is a schematic diagram illustrating how two partition walls separate three independent spaces within a design area, as provided in an embodiment of this application.

[0028] Figure 7 This is a schematic diagram of an overlapping region of fluid domains provided in an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of a fluid domain overlapping region comprising a target first fluid domain, a target second fluid domain, and a target second dividing wall, provided in an embodiment of this application.

[0030] Figure 9 This is a schematic diagram of an independent space region corresponding to the third flow channel region in a design area provided in an embodiment of this application.

[0031] Figure 10 This is a schematic diagram of a target first fluid domain, a target second fluid domain, and a target third fluid domain in a design region provided in an embodiment of this application;

[0032] Figure 11 This is a schematic diagram illustrating an initial first dividing wall extending beyond the design area, as provided in an embodiment of this application.

[0033] Figure 12 This is a schematic diagram of a heat exchanger internal structure model design device provided in the embodiments of this application;

[0034] Figure 13 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application;

[0035] Figure 14 This is an internal structural diagram of a computer-readable storage medium provided in an embodiment of this application. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this disclosure.

[0037] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings herein are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, apparatus, product, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0038] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] Example 1

[0040] Figure 1 A flowchart illustrating a design method for an internal structure model of a heat exchanger, as provided in Embodiment 1 of this application, is shown below. Figure 1 The method can be executed by a device that performs the method, which can be implemented in software and / or hardware, and the method includes:

[0041] S110. Based on the design region and the selected thick-walled unit cell, determine the target first dividing wall and the target second dividing wall.

[0042] It should be noted that this embodiment uses advanced generative design and engineering simulation software to design the internal structure model of the heat exchanger. For example, the advanced generative design and engineering simulation software is nTop (formerly known as nTopology software).

[0043] This embodiment requires designing the internal structure model of the heat exchanger within a defined three-dimensional spatial region, and this three-dimensional spatial region is denoted as the design region. For example, this design region is... Figure 2 The 10mm×10mm×10mm cube shown is not limited in other embodiments.

[0044] It should be noted that the internal structure of the heat exchanger includes partition walls and flow channels. The partition walls are used to separate the space where the flow channels are located. In order to generate this space through the partition walls, and after the design of the internal structure model of the heat exchanger is completed, additive manufacturing technology (which can be understood as 3D printing technology) can be used to manufacture the corresponding internal structure of the heat exchanger based on the internal structure model of the heat exchanger. In this embodiment, the partition walls are created using a diamond lattice.

[0045] The Diamond lattice used to design the partition walls here can have its wall thickness (the wall thickness of the partition walls) adjusted. This Diamond lattice is composed of multiple unit cells, for example, such as... Figure 3 As shown, the unit cell has a corresponding channel structure; and the unit cell used to form the Diamond lattice with adjustable wall thickness is denoted as a thick-walled unit cell, while the user can select the desired thin-walled unit cell; multiple thick-walled unit cells are combined and filled in the design area to form the aforementioned Diamond lattice. The channel structures between the thick-walled unit cells in the Diamond lattice are interconnected, thereby forming a corresponding space for containing fluids in the Diamond lattice, and enabling the separation of two fluids; and this Diamond lattice is denoted as the target first dividing wall. For example, the target first dividing wall is as follows: Figure 4 As shown.

[0046] Similarly, a new dividing wall can be designed in the design area. This new dividing wall has the same structure as the first target dividing wall, except that its center point is different. If the first target dividing wall and the new dividing wall are generated based on the same center point, the two dividing walls will overlap. This new dividing wall will be designated as the second target dividing wall. The first target dividing wall and the second target dividing wall are as follows: Figure 5 As shown; the first and second target partition walls can divide the remaining area in the design area into three independent spatial regions, corresponding to the subsequent three flow channel regions; for example, refer to Figure 6 Among them, the dark blue area is the first independent spatial area, the pink area is the second independent spatial area, and the bright blue area is the third independent spatial area.

[0047] S120. Based on the selected thick-walled cell, the design region, and the center plane size offset, determine the overlapping region between the target first fluid domain and the fluid domain.

[0048] It should be noted that after generating the first target partition wall and the second target partition wall in the design area, thereby dividing the design area into three independent spatial regions, the next step is to design the flow channel region in each independent spatial region, that is, to determine the corresponding flow channel region in each independent spatial region.

[0049] Taking one of the flow channel regions as an example, the creation of this flow channel region also uses a Diamond lattice. The difference between this Diamond lattice and the one used to create the partition wall is that the Diamond lattice used to create the flow channel region cannot have its wall thickness adjusted, and this Diamond lattice is also composed of multiple corresponding unit cells. The unit cells of the Diamond lattice that cannot have its wall thickness adjusted are called thick-walled unit cells, and the user can select the desired thick-walled unit cells.

[0050] It should be noted that users can set the offset of the center plane size of the Diamond lattice, which cannot be adjusted in terms of wall thickness, through nTop. Taking a wall of a unit cell without thick walls as an example, the surface between the upper and lower walls of the wall is the center plane. By setting the offset of the center plane size, the wall thickness of the unit cell without thick walls can be adjusted.

[0051] Specifically, a corresponding Diamond lattice can be generated within the design area using the user-selected thick-walled cell. The wall thickness of the thick-walled cell can be adjusted by the user-set center plane size offset, thereby adjusting the wall thickness of the Diamond lattice until the Diamond lattice with adjusted wall thickness fills one of the independent spatial regions separated by the two dividing walls. The Diamond lattice that fills one of the independent spatial regions is denoted as the target first fluid domain, and the target first fluid domain realizes the design of the first flow channel region.

[0052] Furthermore, another Diamond lattice can be generated within the design area using the user-selected thick-walled cell, and the wall thickness of the thick-walled cell can be adjusted by the user-set center plane size offset, thereby adjusting the wall thickness of the Diamond lattice until the Diamond lattice encompasses the independent spatial region corresponding to the target second dividing wall, the target first fluid domain, and the second flow channel region (i.e., the subsequent target second fluid domain); and the newly generated Diamond lattice is recorded as the fluid domain overlapping region.

[0053] For example, please refer to Figure 7 and Figure 8 The overlapping region of the fluid domains comprises three parts: the second dividing wall of the target, the first fluid domain of the target, and the second fluid domain of the target; among which, Figure 8 In the diagram, the two target second dividing walls shown above and below are actually one target second dividing wall in the actual structure, and the same applies to the target second fluid domain.

[0054] S130. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0055] It should be noted that the fluid domain overlap region consists of independent spatial regions corresponding to the target second dividing wall, the target first fluid domain, and the second flow channel region; (Refer to...) Figure 7 and Figure 8 If the overlapping area of ​​the fluid domain is combined with the union of the second dividing wall and the first fluid domain (both are added using Boolean logic), and then a Boolean subtraction operation is performed, the result of the operation is the independent spatial region corresponding to the second flow channel region, and this result is recorded as the second fluid domain of the target.

[0056] S140. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0057] It should be noted that the overlapping region of the fluid domains consists of the target's second dividing wall, the target's first fluid domain, and the target's second fluid domain; (Refer to...) Figure 9 The design area consists of independent spatial regions corresponding to the first target partition wall, the second target partition wall, the first target fluid domain, the second target fluid domain, and the third flow channel region; (Refer to...) Figure 9 and Figure 10 Furthermore, the independent spatial region corresponding to the second flow channel region is denoted as the target third fluid domain; therefore, the design region can also be represented by the target first dividing wall, the fluid domain overlapping region, and the target third fluid domain; among them, the design region, the target first dividing wall, and the fluid domain overlapping region are all already determined regions, therefore, the target third fluid domain can be obtained by performing a Boolean subtraction operation on the union of the design region and the target first dividing wall and the fluid domain overlapping region (both are added using Boolean logic).

[0058] It should be noted that in this embodiment, the target first dividing wall and the target second dividing wall are determined based on the design region and the selected thick-walled unit cell; the target first fluid domain and the fluid domain overlap region are determined based on the selected non-thick-walled unit cell, the design region, and the center plane size offset; the target second fluid domain is determined based on the fluid domain overlap region, the target first fluid domain, and the target second dividing wall; and the target third fluid domain is determined based on the design region, the target first dividing wall, and the fluid domain overlap region. In the above implementation, firstly, thick-walled unit cells are used to fill the design region, generating two dividing walls. These two dividing walls separate the remaining space of the design region into three independent spaces, facilitating the subsequent flow channel design in each independent space. Further, one of the independent spaces is filled with non-thick-walled unit cells to form the first flow channel (first fluid domain). Then, a fluid domain overlap region containing the first fluid domain, the target second dividing wall, and the second flow channel (second fluid domain) is generated using non-thick-walled unit cells. By performing a Boolean operation between the fluid domain overlap region and the first fluid domain and the target second dividing wall, the second fluid domain is obtained. The design region consists of two dividing walls and three fluid domains, that is, it consists of the target first dividing wall and the fluid domain overlap region. Therefore, by combining the design region with the target second dividing wall… By performing Boolean operations on the overlapping areas of the partition wall and the fluid domain, the third flow channel, i.e., the third fluid domain, can be calculated. At this point, the design of the internal structure model of the heat exchanger can be completed in the design area. The internal structure model of the heat exchanger includes two partition walls and three fluid domains. Compared with the prior art, this application adds a partition wall and a fluid domain to the internal structure of the heat exchanger. The two partition walls can be used to separate three flow channel areas, and then the corresponding fluid domains (flow channels) are determined in the three flow channel areas respectively. In this way, the heat exchanger subsequently manufactured based on the internal structure model of the heat exchanger can be a three-flow channel heat exchanger. The additional flow channel can enable the heat exchanger to have an additional medium transmission function, thereby improving the heat exchange efficiency and heat exchange uniformity, and further improving the service life of the heat exchanger.

[0059] Example 2

[0060] This application provides a heat exchanger internal structure model design method in Embodiment 2, which optimizes the "determining the target first partition wall and the target second partition wall based on the design region and the selected thick-walled unit cell" in Embodiment 1. It should be noted that for parts not detailed in this embodiment, please refer to the descriptions in other embodiments. The method includes:

[0061] S211. Based on the selected design region with thick-walled unit cell filling, the initial first partition wall is obtained.

[0062] It should be noted that the design region is a region where thick-walled unit cells are regularly filled. The regular filling of this design region by thick-walled unit cells forms an initial dividing wall, denoted as the initial first dividing wall. For example, this initial first dividing wall is as follows: Figure 11 As shown, where, Figure 11 The blue box shown corresponds to the design area.

[0063] S212. The initial first dividing wall is dimensionally offset according to the preset offset direction to generate the initial second dividing wall.

[0064] It should be noted that, in order to generate three flow channel regions, this embodiment needs to generate two partition walls in the design area; after the initial first partition wall is generated, another partition wall needs to be generated; in order to improve the generation efficiency of the partition wall and to ensure the structural consistency of the two generated partition walls, this embodiment replicates and generates a new initial first partition wall, and offsets the new initial first partition wall relative to the original initial first partition wall by a certain size in a preset offset direction, so as to achieve the size offset of the initial first partition wall according to the preset offset direction, and obtain the initial second partition wall.

[0065] S213. Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall respectively.

[0066] It should be noted that after the initial generation of the first and second dividing walls, the areas they occupy both exceed the design area; for example, refer to... Figure 11 The initial first dividing wall, after being generated, occupies an area exceeding the design area. To confine the initial first and second dividing walls within the design area, the initial first and second dividing walls are divided by the design area, retaining only the portions of the initial first and second dividing walls within the design area. These retained portions are denoted as the target first dividing wall and the target second dividing wall, respectively. For example, the target first dividing wall and the target second dividing wall are as follows: Figure 5 As shown.

[0067] It should be noted that the target first dividing wall and the target second dividing wall can divide the design area into three independent spatial regions, which prepares the preliminary work for determining the flow channel regions (fluid domains) corresponding to different flow channels. Furthermore, by dividing the initial first dividing wall and the initial second dividing wall by the design area, only the part located within the design area is retained, which improves the regional accuracy of the determined first dividing wall and the second dividing wall, and also facilitates the improvement of the regional accuracy of the three fluid domains calculated based on the target first dividing wall and the target second dividing wall.

[0068] S220. Based on the selected thick-walled cell, the design region, and the center plane size offset, determine the overlapping region between the target first fluid domain and the fluid domain.

[0069] S230. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0070] S240. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0071] Example 3

[0072] This application provides a heat exchanger internal structure model design method in Embodiment 3. This method supplements the steps preceding "obtaining the initial first partition wall based on the selected design region filled with thick-walled unit cells" in Embodiment 2. It should be noted that for parts not described in detail in this embodiment, please refer to the descriptions in other embodiments. The method includes:

[0073] S311. Process the input region size based on the preset boundary calculation function to obtain region boundary information.

[0074] It should be noted that the advanced generative design and engineering simulation software used in this embodiment has a pre-set boundary calculation function. This boundary calculation function is used to process the input region size, thereby calculating the region boundary information in the software. This region boundary information is subsequently used to generate the design region. In this embodiment, the design region is a cube, and the region boundary information includes the face boundary information of each face of the cube in the design region. Specifically, the face boundary information in this embodiment is the three-dimensional coordinates of each point on the corresponding cube face.

[0075] For example, if the user inputs a region size of 10mm, the software's built-in boundary calculation function can calculate the region boundary information based on this region size.

[0076] S312. Based on the region boundary information, generate the design region.

[0077] The region boundary information includes the three-dimensional coordinates of each point on the face of the cube corresponding to the design region. The software can model the design region using this boundary information, such as... Figure 2 The cube has dimensions of 10mm × 10mm × 10mm.

[0078] S313. Based on the selected design region with thick-walled cell filling, the initial first partition wall is obtained.

[0079] S314. The initial first dividing wall is dimensionally offset according to the preset offset direction to generate the initial second dividing wall.

[0080] S315. Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall respectively.

[0081] S320. Based on the selected thick-walled cell, the design region, and the center plane size offset, determine the overlapping region between the target first fluid domain and the fluid domain.

[0082] S330. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0083] S340. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0084] Example 4

[0085] This application provides a heat exchanger internal structure model design method in Embodiment 4, which optimizes the step of "offsetting the initial first partition wall in size according to a preset offset direction to generate an initial second partition wall" in Embodiment 2. It should be noted that for parts not detailed in this embodiment, please refer to the descriptions in other embodiments. The method includes:

[0086] S411. Based on the selected design region with thick-walled unit cell filling, the initial first partition wall is obtained.

[0087] S412A. Determine the offset front wall boundary information of the initial first partition wall and the size offset amount of the corresponding preset offset direction.

[0088] Among them, the three-dimensional coordinates of each point on the wall surface of the initial first partition wall are recorded as the offset front wall boundary information; the user can set the offset direction of the initial first partition wall through software, as well as the distance when offsetting according to the offset direction, and record the distance as the size offset.

[0089] S412B. Based on the offset front wall boundary information and the size offset, determine the offset rear wall boundary information.

[0090] It should be noted that the above-mentioned dimensional offset has a corresponding offset direction, so the dimensional offset is a vector. If the three-dimensional coordinates of each point in the offset front wall boundary information are changed according to the dimensional offset, a new set of three-dimensional coordinates of the points can be obtained, which is denoted as the offset rear wall boundary information.

[0091] Specifically, first determine the offset components of this dimension on the three coordinate axes in the three-dimensional coordinate system, denoted as follows: ;The three-dimensional coordinates of a point (offset front point) in the offset front wall boundary information. The three-dimensional coordinates of this point The 3D coordinates of the point corresponding to the offset boundary information (offset point) are as follows: ,in, .

[0092] The above method can be used to calculate the three-dimensional coordinates of the offset points corresponding to each offset front point in the offset front wall boundary information, and the three-dimensional coordinates of each offset rear point are marked as the offset rear wall boundary information. This offset rear wall boundary information can be used to describe the position of the new segmented wall obtained after the initial first segmented wall has been offset.

[0093] S412C. Based on the offset rear wall boundary information, generate the initial second dividing wall.

[0094] Among them, based on the offset rear wall boundary information, a new segmented wall can be obtained that is consistent with the initial first segmented wall structure but different in position, which is denoted as the initial second segmented wall.

[0095] It should be noted that the generated initial first dividing wall and initial second dividing wall are both retained.

[0096] S413. Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall respectively.

[0097] S420. Based on the selected thick-walled cell, the design region, and the center plane size offset, determine the overlapping region between the target first fluid domain and the fluid domain.

[0098] S430. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0099] S440. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0100] Example 5

[0101] This application provides a heat exchanger internal structure model design method in Embodiment 5, which optimizes the step of "offsetting the initial first partition wall in size according to a preset offset direction to generate an initial second partition wall" in Embodiment 2. It should be noted that for parts not detailed in this embodiment, please refer to the descriptions in other embodiments. The method includes:

[0102] S511. Based on the selected design region with thick-walled unit cell filling, the initial first partition wall is obtained.

[0103] S512A. Determine the center point of the offset front wall of the initial first dividing wall, and the size offset amount corresponding to the preset offset direction.

[0104] It should be noted that the envelope volume of the initial first dividing wall can be a cube, and the center of this cube is taken as the center of the initial first dividing wall, denoted as the center point of the offset front wall; the user can set the size offset through software, and the size offset is a vector with a corresponding offset direction.

[0105] S512B: Based on the offset front wall center and the size offset, generate an initial second partition wall.

[0106] It should be noted that the position of the dividing wall can be determined by the center of the dividing wall, and the distance vector between the center of the wall and each point on the dividing wall is fixed. By using the size offset (including the offset direction and offset distance), the center of the wall before offset can be moved by the offset distance according to the size offset and the offset direction, thereby obtaining a new wall center, which is denoted as the offset wall center. The new initial first dividing wall, whose position has changed only, can be determined by this offset wall center, which is denoted as the initial second dividing wall. After the initial second dividing wall is generated, the original initial first dividing wall is still retained.

[0107] For example, first determine the offset components of this dimension on the three coordinate axes in the three-dimensional coordinate system, denoted as follows: And the three-dimensional coordinates of the offset front wall center are marked as Furthermore, the three-dimensional coordinates of the center of the offset rear wall are obtained by offsetting the center of the front wall according to the dimensional offset. ,in, , .

[0108] S513. Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall respectively.

[0109] S520. Based on the selected thick-walled cell, the design region, and the center plane size offset, determine the overlapping region between the target first fluid domain and the fluid domain.

[0110] S530. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0111] S540. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0112] Example 6

[0113] This application provides a method for designing an internal structure model of a heat exchanger in Embodiment Six. This method optimizes the step in Embodiment One, which involves "determining the overlapping region of the target first fluid domain and the fluid domain based on the selected non-thick-walled unit cell, the design region, and the center plane size offset." It should be noted that for parts not detailed in this embodiment, please refer to the descriptions in other embodiments. This method includes:

[0114] S610. Based on the design region and the selected thick-walled unit cell, determine the target first dividing wall and the target second dividing wall.

[0115] S621. Based on the selected thick-walled unit cell and the design region, determine the intermediate first fluid domain;

[0116] S622. Adjust the offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain to a first preset value to obtain the target first fluid domain.

[0117] It should be noted that after the thick-walled cells are filled in the design area in a certain column order, a Diamond lattice can be formed. By setting the MidsurfaceOffset of the center surface size corresponding to the Diamond lattice in the software, the wall thickness of each thick-walled cell in the Diamond lattice can be adjusted. Specifically, if the MidsurfaceOffset is set to a first preset value obtained based on historical experience, the Diamond lattice can be made to fill the first flow channel region separated by the target first dividing wall and the target second dividing wall exactly, and the Diamond lattice with the corresponding MidsurfaceOffset of the first preset value is determined as the target first fluid domain. In this example, the first preset value is -0.1mm. In other examples, the specific value is not limited.

[0118] For example, refer to Figure 8 After filling the design area with thick-walled cells in a certain column order, the center plane size offset of the Diamond lattice is set to -0.1mm. The Diamond lattice (blue area) can just fill the first flow channel area separated by the first target partition wall and the second target partition wall.

[0119] S623. Adjust the offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain to a second preset value to obtain the fluid domain overlapping region.

[0120] Similarly, by setting the offset of the center plane size of the Diamond lattice formed by filling the design area with thick-walled cells in a certain column order to a second preset value, and referring to... Figure 8 The Diamond lattice precisely encompasses the first fluid domain of the target, the second dividing wall of the target, and the second flow channel region (the second fluid domain of the target) separated by the first and second dividing walls of the target. (Refer to...) Figure 7 and Figure 8 And the Diamond lattice is denoted as the fluid domain overlapping region.

[0121] The second preset value is determined based on historical experience. In this embodiment, the second preset value is 0.4. In other embodiments, the specific value is not limited.

[0122] S630. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0123] S640. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0124] Example 7

[0125] This application provides a method for designing an internal structure model of a heat exchanger in Embodiment Seven. This method optimizes the step of "determining the intermediate first fluid domain based on the selected non-thick-walled unit cell and the design region" in Embodiment Six. It should be noted that for parts not described in detail in this embodiment, please refer to the descriptions in other embodiments. The method includes:

[0126] S710. Based on the design region and the selected thick-walled unit cell, determine the target first dividing wall and the target second dividing wall.

[0127] S721A. Based on the selected thick-walled unit cell-free filling of the design region, an initial first fluid domain is obtained.

[0128] In this process, after the user selects a non-thick-walled unit cell in the software and fills it in the design area in a certain order, a Diamond lattice for filling the first flow channel region can be obtained, and this Diamond lattice is recorded as the initial first fluid domain.

[0129] S721B. The initial first fluid domain is divided based on the design region to obtain an intermediate first fluid domain.

[0130] It should be noted that, just as the initial first partition wall obtained after the design region is filled by a thick-walled unit cell extends beyond the design region, the initial first fluid domain obtained after the design region is filled by a non-thick-walled unit cell will also extend beyond the design region. In order to improve the accuracy of the determination of the first fluid domain, this embodiment also needs to divide the initial first fluid domain by the design region, and only retain the part of the initial first fluid domain located within the design region, which is denoted as the intermediate first fluid domain.

[0131] S722. Adjust the offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain to a first preset value to obtain the target first fluid domain.

[0132] S723. Adjust the offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain to a second preset value to obtain the fluid domain overlapping region.

[0133] S730. Based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall, determine the target second fluid domain.

[0134] S740. Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, determine the target third fluid domain.

[0135] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0136] Example 8

[0137] Based on the same inventive concept, this embodiment also provides a heat exchanger internal structure model design device for implementing the heat exchanger internal structure model design method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the heat exchanger internal structure model design device provided below can be found in the limitations of the heat exchanger internal structure model design method described above, and will not be repeated here.

[0138] In this embodiment, as Figure 12As shown, a device for designing a model of the internal structure of a heat exchanger is provided, comprising:

[0139] The dual-segmentation wall determination module is used to determine the target first segmentation wall and the target second segmentation wall based on the design region and the selected thick-walled unit cell;

[0140] The first fluid domain determination module is used to determine the overlapping area between the target first fluid domain and the fluid domain based on the selected thick-walled unit cell, the design region, and the center plane size offset.

[0141] The second fluid domain determination module is used to determine the target second fluid domain based on the fluid domain overlap region, the target first fluid domain, and the target second dividing wall;

[0142] The third fluid domain determination module is used to determine the target third fluid domain based on the design area, the overlapping area of ​​the target first dividing wall and the fluid domain.

[0143] Each module in the aforementioned heat exchanger internal structure model design device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device in hardware form, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0144] It should be noted that in this embodiment, the target first dividing wall and the target second dividing wall are determined based on the design region and the selected thick-walled unit cell; the target first fluid domain and the fluid domain overlap region are determined based on the selected non-thick-walled unit cell, the design region, and the center plane size offset; the target second fluid domain is determined based on the fluid domain overlap region, the target first fluid domain, and the target second dividing wall; and the target third fluid domain is determined based on the design region, the target first dividing wall, and the fluid domain overlap region. In the above implementation, firstly, thick-walled unit cells are used to fill the design region, generating two dividing walls. These two dividing walls separate the remaining space of the design region into three independent spaces, facilitating the subsequent flow channel design in each independent space. Further, one of the independent spaces is filled with non-thick-walled unit cells to form the first flow channel (first fluid domain). Then, a fluid domain overlap region containing the first fluid domain, the target second dividing wall, and the second flow channel (second fluid domain) is generated using non-thick-walled unit cells. By performing a Boolean operation between the fluid domain overlap region and the first fluid domain and the target second dividing wall, the second fluid domain is obtained. The design region consists of two dividing walls and three fluid domains, that is, it consists of the target first dividing wall and the fluid domain overlap region. Therefore, by combining the design region with the target second dividing wall… By performing Boolean operations on the overlapping areas of the partition wall and the fluid domain, the third flow channel, i.e., the third fluid domain, can be calculated. At this point, the design of the internal structure model of the heat exchanger can be completed in the design area. The internal structure model of the heat exchanger includes two partition walls and three fluid domains. Compared with the prior art, this application adds a partition wall and a fluid domain to the internal structure of the heat exchanger. The two partition walls can be used to separate three flow channel areas, and then the corresponding fluid domains (flow channels) are determined in the three flow channel areas respectively. In this way, the heat exchanger subsequently manufactured based on the internal structure model of the heat exchanger can be a three-flow channel heat exchanger. The additional flow channel can enable the heat exchanger to have an additional medium transmission function, thereby improving the heat exchange efficiency and heat exchange uniformity, and further improving the service life of the heat exchanger.

[0145] In an optional embodiment, determining the target first dividing wall and the target second dividing wall based on the design region and the selected thick-walled unit cell includes:

[0146] Based on the selected design region with thick-walled unit cell filling, the initial first partition wall is obtained;

[0147] The initial first dividing wall is dimensionally offset according to a preset offset direction to generate an initial second dividing wall;

[0148] Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall, respectively.

[0149] In an optional embodiment, before obtaining the initial first dividing wall based on the selected thick-walled cell-filled design region, the method further includes:

[0150] The input region size is processed based on a preset boundary calculation function to obtain region boundary information;

[0151] Based on the aforementioned regional boundary information, a design region is generated.

[0152] In an optional embodiment, the step of dimensionally offsetting the initial first dividing wall according to a preset offset direction to generate the initial second dividing wall includes:

[0153] Determine the offset front wall boundary information of the initial first segmented wall, and the size offset amount of the corresponding preset offset direction;

[0154] Based on the offset front wall boundary information and the size offset, determine the offset rear wall boundary information;

[0155] Based on the offset rear wall boundary information, an initial second dividing wall is generated.

[0156] In an optional embodiment, the step of dimensionally offsetting the initial first dividing wall according to a preset offset direction to generate the initial second dividing wall includes:

[0157] Determine the center point of the offset front wall of the initial first partition wall, and the size offset amount of the corresponding preset offset direction;

[0158] Based on the offset front wall center and the dimensional offset, an initial second partition wall is generated.

[0159] In an optional embodiment, determining the overlapping region between the target first fluid domain and the fluid domain based on the selected thick-walled cellless region, the design region, and the center plane size offset includes:

[0160] Based on the selected thick-walled unit cell and the design region, the intermediate first fluid domain is determined;

[0161] The offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain is adjusted to a first preset value to obtain the target first fluid domain.

[0162] The offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain is adjusted to a second preset value to obtain the fluid domain overlapping region.

[0163] In an optional embodiment, determining the intermediate first fluid domain based on the selected thick-walled cell and the design region includes:

[0164] The initial first fluid domain is obtained by filling the selected design region without thick-walled unit cells.

[0165] The initial first fluid domain is divided based on the design region to obtain an intermediate first fluid domain.

[0166] Example 9

[0167] In this embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows. Figure 13 As shown, the computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The database stores data. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements a design method for a heat exchanger internal structure model.

[0168] Those skilled in the art will understand that Figure 13 The structure shown is merely a block diagram of a portion of the structure related to the present disclosure and does not constitute a limitation on the computer device to which the present disclosure is applied. A specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0169] Example 10

[0170] In this embodiment, a computer-readable storage medium is provided, such as... Figure 14 As shown, a computer program is stored thereon, and when the computer program is executed by the processor, it implements the steps in the above-described method embodiments.

[0171] Example 11

[0172] In this embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0173] It should be noted that the information collected is information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of the relevant data all comply with the relevant laws, regulations and standards of the relevant countries and regions, necessary confidentiality measures have been taken, and it does not violate public order and good morals. Corresponding operation portals are provided for users to choose to authorize or refuse.

[0174] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this disclosure can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this disclosure may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this disclosure may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0175] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0176] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent disclosure. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be determined by the appended claims.

Claims

1. A method for designing an internal structure model of a heat exchanger, characterized in that, include: Based on the design region and the selected thick-walled unit cell, the target first dividing wall and the target second dividing wall are determined; Based on the selected thick-walled unit cell, the design region, and the center plane size offset, the overlapping region between the target first fluid domain and the fluid domain is determined. The target second fluid domain is determined based on the overlapping region of the fluid domains, the target first fluid domain, and the target second dividing wall; Based on the design region, the overlapping area of ​​the target first dividing wall and the fluid domain, the target third fluid domain is determined; The determination of the target first dividing wall and the target second dividing wall based on the design region and the selected thick-walled unit cell includes: Based on the selected design region with thick-walled unit cell filling, the initial first partition wall is obtained; The initial first dividing wall is dimensionally offset according to a preset offset direction to generate an initial second dividing wall; Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall, respectively.

2. The method according to claim 1, characterized in that, Before obtaining the initial first dividing wall based on the selected thick-walled unit cell-filled design region, the process further includes: The input region size is processed based on a preset boundary calculation function to obtain region boundary information; Based on the aforementioned regional boundary information, a design region is generated.

3. The method according to claim 1, characterized in that, The step of offsetting the initial first dividing wall according to a preset offset direction to generate the initial second dividing wall includes: Determine the offset front wall boundary information of the initial first segmented wall, and the size offset amount of the corresponding preset offset direction; Based on the offset front wall boundary information and the size offset, determine the offset rear wall boundary information; Based on the offset rear wall boundary information, an initial second dividing wall is generated.

4. The method according to claim 1, characterized in that, The step of offsetting the initial first dividing wall according to a preset offset direction to generate the initial second dividing wall includes: Determine the center point of the offset front wall of the initial first partition wall, and the size offset amount of the corresponding preset offset direction; Based on the offset front wall center and the dimensional offset, an initial second partition wall is generated.

5. The method according to claim 1, characterized in that, The determination of the overlapping region between the target first fluid domain and the fluid domain based on the selected thick-walled cellless region, the design region, and the center plane size offset includes: Based on the selected thick-walled unit cell and the design region, the intermediate first fluid domain is determined; The offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain is adjusted to a first preset value to obtain the target first fluid domain. The offset of the center plane size corresponding to the thick-walled unit cell in the intermediate first fluid domain is adjusted to a second preset value to obtain the fluid domain overlapping region.

6. The method according to claim 5, characterized in that, The determination of the intermediate first fluid domain based on the selected thick-walled unit cell and the design region includes: The initial first fluid domain is obtained by filling the selected design region without thick-walled unit cells. The initial first fluid domain is divided based on the design region to obtain an intermediate first fluid domain.

7. A device for designing a model of the internal structure of a heat exchanger, characterized in that, The device includes: The dual-segmentation wall determination module is used to determine the target first segmentation wall and the target second segmentation wall based on the design region and the selected thick-walled unit cell; The first fluid domain determination module is used to determine the overlapping area between the target first fluid domain and the fluid domain based on the selected thick-walled unit cell, the design region, and the center plane size offset. The second fluid domain determination module is used to determine the target second fluid domain based on the fluid domain overlap region, the target first fluid domain, and the target second dividing wall; The third fluid domain determination module is used to determine the target third fluid domain based on the design area, the overlapping area of ​​the target first dividing wall and the fluid domain; The determination of the target first dividing wall and the target second dividing wall based on the design region and the selected thick-walled unit cell includes: Based on the selected design region with thick-walled unit cell filling, the initial first partition wall is obtained; The initial first dividing wall is dimensionally offset according to a preset offset direction to generate an initial second dividing wall; Based on the design region, the initial first dividing wall and the initial second dividing wall are divided to obtain the target first dividing wall and the target second dividing wall, respectively.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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