Simplified analysis method and system for complex radiator group structure in electric reactor

Abstract

The invention discloses a simplified analysis method for a complex radiator group structure in an electric reactor, and belongs to the field of electric reactors. The method comprises the following steps that S1, the number of cooling fins adopted by a radiator set is reduced to obtain a simplified radiator set, a reactor three-dimensional model is established, material attribute parameters of all parts are set in finite element analysis software, and the structures of all the parts are subdivided; s2, determining loss distribution on each component, and determining a shell heat dissipation boundary condition of the reactor; s3, applying an equivalent convective heat transfer coefficient of the cooling fins on the cooling fins in combination with the simplification degree of the reactor radiator group; and S4, solving the temperature fluid field control equation to obtain the temperature fluid field of the reactor. According to the method, the reactor is fully modeled after the number of the radiating fins in the radiator group is reduced, so that the difficulty of fully modeling is reduced, the simulation efficiency can be improved on the basis of guaranteeing the simulation precision, and the method is feasible.

Description

Technical Field

[0001] The present invention relates to the technical field of reactors, and in particular to a simplified analysis method and system for a complex heat sink group structure in a reactor. Background Art

[0002] Large oil-immersed power reactors are one of the important devices that constitute the power transmission and distribution network of the power system. Therefore, analyzing the multi-physical field distribution characteristics of the electromagnetic fluid temperature of the reactor is of great significance to ensure the safe and reliable operation of the reactor and to specify efficient operation and maintenance strategies during the operation of the reactor.

[0003] The application number is 2023117721073: A method for fault equivalence of ultra-high voltage shunt reactor based on multi-field simulation, which mentions a method for constructing a simulation model of a real reactor, specifically: considering the influence of multiple physical fields such as electric field, magnetic field and temperature field, and using the physical parameters and structural parameters of the real reactor to establish a detailed three-dimensional simulation geometric model, the model takes into account the structural characteristics and material properties of the real reactor, including the winding, internal structure, iron core, magnetic shunt of the body, shielding cap, oil tank and radiator. The main structural components of the reactor. However, its modeling method still has the following disadvantages: the radiator group of the ultra-high voltage reactor is a complex structure composed of multiple groups of heat sinks. In the calculation of the temperature fluid field of the reactor, the fine modeling process of the reactor radiator group structure is very complicated. In the fine modeling process, a large number of geometric details and boundary conditions need to be processed, which makes meshing difficult, and the full model modeling will generate a huge amount of meshes, which greatly reduces the calculation efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to solve the problem that when calculating the temperature fluid field of the reactor, the radiator group needs to be fully modeled in detail, but the meshing is difficult and a huge amount of meshes will be generated, which leads to extremely low calculation efficiency.

[0005] In order to solve the above problems, the present invention provides a simplified analysis method for a complex heat sink group structure in a reactor, comprising the following steps:

[0006] S1: Reduce the number of heat sinks used in the radiator group to obtain a simplified radiator group, establish a three-dimensional model of the reactor, which includes the shell, core, winding, metal box, internal metal structural parts and simplified radiator group of the reactor, set the material property parameters of each component in the finite element analysis software, and divide the structure of each component;

[0007] S2: Determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell;

[0008] S3: Combined with the simplification degree of the reactor heat sink group, the equivalent convection heat transfer coefficient of the heat sink is applied to the heat sink;

[0009] S4: Use the finite volume method to simulate the temperature fluid field of the reactor, solve the temperature fluid field control equation, and obtain the temperature fluid field of the reactor.

[0010] Preferably, in step S1, the material property parameters include density, specific heat capacity, viscosity, and thermal conductivity of the core, winding, metal box, and internal metal structural parts.

[0011] Preferably, the specific process of segmenting the structure of each component in step S1 is: using tetrahedral meshes to segment the metal box, simplified heat sink assembly and internal metal structural parts; using hexahedral meshes to segment the winding.

[0012] The present invention adopts different grids for segmentation according to the different structures of each component, and can form a higher quality segmentation grid according to the specific structural characteristics, thereby ensuring the accuracy of the solution result of the reactor temperature fluid field.

[0013] Preferably, in step S2, the heat dissipation boundary conditions of the shell of the reactor include the convection heat transfer coefficient of the shell and the ambient temperature.

[0014] Preferably, the calculation formula of the convection heat transfer coefficient of the shell is: Where k is the thermal conductivity of the outside air, Nu w is the Nusselt number of the shell, L w is the characteristic dimension of the shell.

[0015] Preferably, the specific process of step S2 is:

[0016] S201: Determine the loss distribution on the winding based on the total loss measured under the rated conditions of the reactor and the number of turns, DC resistance and rated current of the reactor winding;

[0017] S202: Calculate the electromagnetic field of the reactor under rated conditions to obtain stray losses on metal structural parts and metal boxes inside the reactor;

[0018] S203: The heat transfer process between the reactor casing and the external environment is equivalently expressed using the convection heat transfer coefficient of the casing.

[0019] Preferably, in step S202, the calculation formula for stray losses on the metal structural parts and metal box inside the reactor is: Among them, σ i is the conductivity of grid cell i; J ei is the eddy current density vector of grid cell i; J ei *is the conjugate eddy current density vector of grid cell i; V i is a grid cell i The volume of the metal structure and the metal box; n is the number of mesh units used to divide the internal metal structure and the metal box.

[0020] Preferably, in step S3, the calculation formula of the equivalent convection heat transfer coefficient of the heat sink is: Where K is the correction factor for the convective heat transfer coefficient, n i is the number of heat sinks in the unsimplified reactor heat sink group, n f is the number of heat sinks in the simplified heat sink group, h s is the convective heat transfer coefficient of the heat sink when the radiator group has not been simplified. Where k is the thermal conductivity of the outside air, L s is the characteristic size of the heat sink, Nu s is the Nusselt number of the heat sink.

[0021] The present invention provides a simplified analysis method for the reactor radiator group structure in simulation analysis, reduces the difficulty of mesh generation, reduces the number of mesh generation, greatly reduces the difficulty of modeling, and improves simulation efficiency.

[0022] Preferably, in step S4, the temperature fluid field control equation is:

[0023]

[0024] in, is the Hamiltonian operator; f is the unit fluid mass force; q is the volume heat source of the fluid; ρ is the fluid density; v is the fluid velocity vector; p is the fluid pressure; μ is the dynamic viscosity of the fluid; e is the internal energy of the fluid; k is the thermal conductivity of the fluid; S is the part of the fluid mechanical energy converted into thermal energy under the combined action of oil viscosity and the internal heat source of the fluid.

[0025] Corresponding to the above method, the present invention also provides a simplified analysis system for a complex heat sink group structure in a reactor, comprising the following modules:

[0026] Modeling module: used to establish a three-dimensional model of the reactor, which includes the shell, core, winding, metal box, internal metal structural parts and simplified radiator group of the reactor. The material property parameters of each component are set in the finite element analysis software, and the structure of each component is segmented;

[0027] Determine heat dissipation boundary condition module: used to determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell;

[0028] Obtaining equivalent convection heat transfer coefficient module: used to apply the equivalent convection heat transfer coefficient of the heat sink to the heat sink in combination with the simplification degree of the reactor heat sink group;

[0029] Simulation calculation module: used to use the finite volume method to simulate the temperature fluid field of the reactor, solve the temperature fluid field control equation, and obtain the temperature fluid field of the reactor.

[0030] The advantages of the present invention are:

[0031] (1) A three-dimensional model of the reactor, including the reactor heat sink group, windings, internal metal structural parts and shell, was established to analyze the overall temperature and flow field distribution of the reactor;

[0032] (2) Different meshes are used for different structures of each component, which can form a higher quality mesh for specific structural features and ensure the accuracy of the solution results of the reactor temperature fluid field;

[0033] (3) A simplified analysis method for the reactor heat sink group structure is provided during the simulation analysis process, which reduces the difficulty of modeling, ensures the simulation accuracy, improves the simulation efficiency, and is practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a flow chart of Embodiment 1 of the present invention;

[0035] Figure 2 is the geometric model of the reactor in Example 1 of the present invention;

[0036] Figure 3 It is a schematic diagram of the structure of the heat sink assembly before simplification in Embodiment 1 of the present invention;

[0037] Figure 4 It is a simplified structural schematic diagram of the heat sink assembly in Embodiment 1 of the present invention;

[0038] Figure 5 The temperature field distribution of the heat sink group before simplification in Example 1 of the present invention;

[0039] Figure 6 This is the simplified temperature field distribution of the radiator group in Example 1 of the present invention. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Example 1

[0042] like Figure 1 As shown, it is a flow chart of this embodiment. This embodiment provides a simplified analysis method for a complex heat sink group structure in a reactor. The specific process is as follows:

[0043] Step 1: Figure 2 As shown in FIG. 1 , the geometric model of the reactor in this embodiment is shown in FIG. Figure 3 , which is a schematic diagram of the structure of the heat sink group before simplification in this embodiment, reduces the number of heat sinks of the reactor heat sink group under study, and obtains a simplified heat sink group. The schematic diagram of the simplified structure of the heat sink group is as follows: Figure 4 As shown;

[0044] Establish a three-dimensional model of the reactor including the reactor core, winding, metal oil tank, internal metal structural parts and simplified radiator group structure;

[0045] Set the material property parameters of key components in the geometric model in the finite element analysis software, including the density, specific heat capacity, viscosity, thermal conductivity, etc. of the reactor core, winding, internal structural parts, oil tank, etc. When setting the material properties, it is necessary to consider the effect of temperature on the material parameters;

[0046] The model is then divided using a mesh that combines tetrahedrons and hexahedrons. The tetrahedron mesh is used to divide complex structures such as the reactor casing and internal metal structural parts, and the hexahedron mesh is used to divide regular structures such as the reactor windings, to obtain a high-quality overall reactor division mesh that combines tetrahedrons and hexahedrons.

[0047] Step 2: Determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell. The specific process is as follows:

[0048] S201: Determine the loss distribution on the winding based on the total loss measured under the rated conditions of the reactor and the number of turns, DC resistance and rated current of the reactor winding;

[0049] S202: Using the electromagnetic field calculation of the reactor under rated conditions, obtain the stray loss on the metal structure and the metal box inside the reactor. Specifically, the electromagnetic field calculation of the reactor is performed using the finite element method. After the magnetic field calculation is completed, the stray loss P on the metal structure and the box inside the reactor is obtained. e The calculation formula is: Among them, σ i is the conductivity of grid cell i; J ei is the eddy current density vector of grid cell i; J ei * is the conjugate eddy current density vector of grid cell i; Vi is a grid cell i The volume of the metal structure and the metal box; n is the number of mesh units of the internal metal structure and the metal box;

[0050] S203: The reactor housing is simplified as a smooth plane, and the heat dissipation process of the reactor housing is considered to be the convection heat transfer of a longitudinally swept flat plate. The convection heat transfer coefficient of the reactor housing under natural convection is obtained. The convection heat transfer coefficient of the housing is used to equivalently express the heat exchange process between the reactor housing and the external environment. The calculation formula of the convection heat transfer coefficient of the housing is: Where k is the thermal conductivity of the outside air, Nu w is the Nusselt number of the shell, L w is the characteristic size of the shell, and the convection heat transfer coefficient of the shell and the ambient temperature are taken as the heat dissipation boundary conditions of the shell.

[0051] Step 3: Based on the simplification degree of the reactor heat sink group, the equivalent convection heat transfer coefficient of the heat sink is applied to the heat sink. The specific process is as follows:

[0052] S301: Simplify the shell of the heat sink in the simplified heat sink group into a smooth plane, obtain the convection heat transfer coefficient of the reactor heat sink under natural convection, and use it as the initial convection heat transfer coefficient of the heat sink. The calculation formula is: Where k is the thermal conductivity of the outside air, L s is the characteristic size of the heat sink, Nu s is the Nusselt number of the heat sink;

[0053] S302: Based on the simplification degree of the reactor radiator group, an equivalent convection heat transfer coefficient is applied to the heat sink of the reactor radiator to simulate the heat dissipation of the heat sink to the outside world. The formula for calculating the equivalent convection heat transfer coefficient is: Where K is the correction factor for the convective heat transfer coefficient, n i is the number of heat sinks in the unsimplified reactor heat sink group, n f is the number of heat sinks in the simplified heat sink group, h s It is the convective heat transfer coefficient of the heat sink before the radiator group is simplified, that is, the initial convective heat transfer coefficient of the radiator;

[0054] S303: After determining the equivalent convection heat transfer coefficient and the ambient temperature on the heat sink, the ambient temperature is applied to the reactor housing area.

[0055] Step 4: Use the finite volume method to simulate the temperature fluid field of the reactor. The temperature fluid field control equations include the mass conservation equation, momentum conservation equation, and energy conservation equation, which are as follows:

[0056]

[0057]

[0058] in, is the Hamiltonian operator; f is the unit fluid mass force; q is the volume heat source of the fluid; ρ is the fluid density; v is the fluid velocity vector; p is the fluid pressure; μ is the dynamic viscosity of the fluid; e is the internal energy of the fluid; k is the thermal conductivity of the fluid; S is the part of the fluid mechanical energy converted into thermal energy under the combined action of oil viscosity and the internal heat source of the fluid;

[0059] After the solution is completed, the reactor temperature field distribution and the reactor shell heat flux distribution can be obtained in the post-processing, realizing the multi-physics field calculation of UHV reactor based on the simplified analysis of the complex heat sink group structure;

[0060] Combination Figure 5 and Figure 6 , is the temperature field distribution of the radiator group before and after simplification in this embodiment. It can be observed that the temperature field distribution of the radiator group before and after simplification is consistent, indicating that the simulation accuracy is high.

[0061] This embodiment provides a simplified analysis method for the structure of the reactor radiator group in the simulation analysis. The number of heat sinks in the radiator group is reduced before the full modeling of the reactor is performed, which reduces the difficulty of modeling the radiator group and further reduces the difficulty of full modeling. It is observed that the temperature field distribution before and after the simplification of the radiator group is consistent, indicating that this embodiment not only ensures the simulation accuracy, but also can improve the simulation efficiency and is practicable.

[0062] Example 2

[0063] Corresponding to Example 1, the present invention further provides a simplified analysis system for a complex heat sink group structure in a reactor, comprising the following modules:

[0064] Modeling module: used to establish a three-dimensional model of the reactor, which includes the shell, core, winding, metal box, internal metal structural parts and simplified radiator group of the reactor. The material property parameters of each component are set in the finite element analysis software, and the structure of each component is dissected. Specifically, it includes the following units:

[0065] Material parameter setting unit: used to set the material property parameters of key components in the geometric model in the finite element analysis software, including setting the density, specific heat capacity, viscosity, thermal conductivity, etc. of the reactor core, winding, internal structural parts, oil tank and other materials. When setting the properties of each material, it is necessary to consider the influence of temperature on the material parameters;

[0066] Mesh division unit: used to divide the model using a mesh that combines tetrahedrons and hexahedrons. The tetrahedron mesh is used to divide complex structures such as the reactor housing and internal metal structural parts, and the hexahedron mesh is used to divide regular structures such as the reactor windings, so as to obtain a high-quality overall reactor division mesh that combines tetrahedrons and hexahedrons.

[0067] Determine the heat dissipation boundary condition module: It is used to determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell. It specifically includes the following units:

[0068] Determine winding loss distribution unit: used to determine the loss distribution on the winding by combining the total loss measured under rated conditions of the reactor, and then combining the number of turns, DC resistance and rated current of the reactor winding;

[0069] Determine the stray loss unit: It is used to calculate the electromagnetic field of the reactor under rated conditions to obtain the stray loss of the metal structure and the metal box inside the reactor. Specifically, the finite element method is used to calculate the electromagnetic field of the reactor. After the magnetic field calculation is completed, the stray loss P of the metal structure and the box inside the reactor is e The calculation formula is: Among them, σ i is the conductivity of grid cell i; J ei is the eddy current density vector of grid cell i; J ei * is the conjugate eddy current density vector of grid cell i; V i is a grid cell i The volume of the metal structure and the metal box; n is the number of mesh units of the internal metal structure and the metal box;

[0070] Solving the shell heat dissipation boundary condition unit: It is used to simplify the reactor shell into a smooth plane, obtain the convection heat transfer coefficient of the reactor shell under natural convection, and use the convection heat transfer coefficient of the shell to equivalently express the heat exchange process between the reactor shell and the external environment. The calculation formula of the convection heat transfer coefficient of the shell is: Where k is the thermal conductivity of the outside air, Nu w is the Nusselt number of the shell, L w is the characteristic size of the shell, and the convection heat transfer coefficient of the shell and the ambient temperature are taken as the heat dissipation boundary conditions of the shell.

[0071] Obtaining equivalent convection heat transfer coefficient module: It is used to apply the equivalent convection heat transfer coefficient of the heat sink to the heat sink in combination with the simplification degree of the reactor heat sink group. It specifically includes the following units:

[0072] Solving the initial convection heat transfer coefficient unit: It is used to simplify the shell of the heat sink in the simplified heat sink group into a smooth plane, and obtain the convection heat transfer coefficient of the reactor heat sink under natural convection conditions as the initial convection heat transfer coefficient of the heat sink. The calculation formula is: Where k is the thermal conductivity of the outside air, L s is the characteristic size of the heat sink, Nu s is the Nusselt number of the heat sink;

[0073] Solving the equivalent convection heat transfer coefficient unit: It is used to apply the equivalent convection heat transfer coefficient on the heat sink of the reactor radiator in combination with the simplification degree of the reactor radiator group. The calculation formula is: Where K is the correction factor for the convective heat transfer coefficient, n i is the number of heat sinks in the unsimplified reactor heat sink group, n f is the number of heat sinks in the simplified heat sink group, h s It is the convective heat transfer coefficient of the heat sink before the radiator group is simplified, that is, the initial convective heat transfer coefficient of the radiator;

[0074] Simulation calculation module: used to simulate the temperature fluid field of the reactor using the finite volume method and solve the temperature fluid field control equation, specifically:

[0075]

[0076] in, is the Hamiltonian operator; f is the unit fluid mass force; q is the volume heat source of the fluid; ρ is the fluid density; v is the fluid velocity vector; p is the fluid pressure; μ is the dynamic viscosity of the fluid; e is the internal energy of the fluid; k is the thermal conductivity of the fluid; S is the part of the fluid mechanical energy converted into thermal energy under the combined action of oil viscosity and the internal heat source of the fluid; the temperature fluid field of the reactor is obtained by solving the temperature fluid field control equation.

[0077] In this embodiment, a three-dimensional model of the reactor is first established through a modeling module, and a simplified radiator group is obtained by reducing the number of heat sinks in the simplified radiator group. After simplification, the difficulty and workload of the mesh subdivision unit in the modeling module can be greatly reduced. Then, a heat dissipation boundary condition determination module is used to determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell; then, an equivalent convection heat transfer coefficient is applied to the heat sink by the heat sink in combination with the degree of simplification of the reactor radiator group, so as to simulate the heat dissipation of the heat sink to the outside world; finally, a simulation calculation module is used to perform a finite volume method to simulate the temperature fluid field of the reactor, solve the temperature fluid field control equation, and obtain the temperature fluid field of the reactor.

[0078] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A simplified analysis method for complex heat sink group structures in reactors, characterized in that: The following steps are involved: S1: Reduce the number of heat sinks used in the radiator group to obtain a simplified radiator group, establish a three-dimensional model of the reactor, which includes the shell, core, winding, metal box, internal metal structural parts and simplified radiator group of the reactor, set the material property parameters of each component in the finite element analysis software, and divide the structure of each component; S2: Determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell; S3: Combined with the simplification degree of the reactor heat sink group, the equivalent convection heat transfer coefficient of the heat sink is applied to the heat sink; S4: Use the finite volume method to simulate the temperature fluid field of the reactor, solve the temperature fluid field control equation, and obtain the temperature fluid field of the reactor.

2. The simplified analysis method for the complex heat sink group structure in the reactor according to claim 1, characterized in that: In step S1, the material property parameters include density, specific heat capacity, viscosity, and thermal conductivity of the core, winding, metal box, and internal metal structural parts.

3. The simplified analysis method for the complex heat sink group structure in the reactor according to claim 2, characterized in that: The specific process of segmenting the structure of each component in step S1 is: using tetrahedral meshes to segment the metal box, simplified heat sink assembly and internal metal structural parts; using hexahedral meshes to segment the winding.

4. The simplified analysis method for complex heat sink group structure in reactor according to claim 1, characterized in that: In step S2, the heat dissipation boundary conditions of the shell of the reactor include the convection heat transfer coefficient of the shell and the ambient temperature.

5. The simplified analysis method for the complex heat sink group structure in the reactor according to claim 4, characterized in that: The calculation formula of the convection heat transfer coefficient of the shell is: Where k is the thermal conductivity of the outside air, Nu w is the Nusselt number of the shell, L w is the characteristic dimension of the shell.

6. The simplified analysis method for complex heat sink group structure in reactor according to claim 1, characterized in that: The specific process of step S2 is: S201: Determine the loss distribution on the winding based on the total loss measured under the rated conditions of the reactor and the number of turns, DC resistance and rated current of the reactor winding; S202: Calculate the electromagnetic field of the reactor under rated conditions to obtain stray losses on metal structural parts and metal boxes inside the reactor; S203: The heat transfer process between the reactor casing and the external environment is equivalently expressed using the convection heat transfer coefficient of the casing.

7. The simplified analysis method for the complex heat sink group structure in the reactor according to claim 6, characterized in that: In step S202, the calculation formula for the stray loss on the metal structural parts and the metal box inside the reactor is: Among them, σ i is the conductivity of grid cell i; J ei is the eddy current density vector of grid cell i; J ei * is the conjugate eddy current density vector of grid cell i; V i is the volume of mesh unit i; n is the number of mesh units used to divide the internal metal structure and metal box.

8. The simplified analysis method for complex heat sink group structure in reactor according to claim 1, characterized in that: In step S3, the calculation formula of the equivalent convection heat transfer coefficient of the heat sink is: Where K is the correction factor for the convective heat transfer coefficient, n i is the number of heat sinks in the unsimplified reactor heat sink group, n f is the number of heat sinks in the simplified heat sink group, h s is the convective heat transfer coefficient of the heat sink when the radiator group has not been simplified. Where k is the thermal conductivity of the outside air, L s is the characteristic size of the heat sink, Nu s is the Nusselt number of the heat sink.

9. The simplified analysis method for complex heat sink group structure in reactor according to claim 1, characterized in that: In step S4, the temperature fluid field control equation is: in, is the Hamiltonian operator; f is the unit fluid mass force; q is the volume heat source of the fluid; ρ is the fluid density; v is the fluid velocity vector; p is the fluid pressure; μ is the dynamic viscosity of the fluid; e is the internal energy of the fluid; k is the thermal conductivity of the fluid; S is the part of the fluid mechanical energy converted into thermal energy under the combined action of oil viscosity and the internal heat source of the fluid.

10. A simplified analysis system for complex heat sink group structures in reactors, characterized in that: Includes the following modules: Modeling module: used to establish a three-dimensional model of the reactor, which includes the shell, core, winding, metal box, internal metal structural parts and simplified radiator group of the reactor. The material property parameters of each component are set in the finite element analysis software, and the structure of each component is segmented; Determine heat dissipation boundary condition module: used to determine the loss distribution on each component and determine the heat dissipation boundary conditions of the reactor shell; Obtaining equivalent convection heat transfer coefficient module: used to apply the equivalent convection heat transfer coefficient of the heat sink to the heat sink in combination with the simplification degree of the reactor heat sink group; Simulation calculation module: used to use the finite volume method to simulate the temperature fluid field of the reactor, solve the temperature fluid field control equation, and obtain the temperature fluid field of the reactor.

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