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Physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling method and physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling system

A geometric modeling, physical thermal technology, applied in geometric CAD, design optimization/simulation, special data processing applications, etc., can solve the problems of grid mapping and data transfer difficulties, complex input methods, etc., to achieve easy grid mapping and Data transfer, high modeling efficiency, and easy error checking

Active Publication Date: 2021-11-19
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the characteristics of their respective physical and mathematical models, physical programs and thermal calculation programs will have many differences in grid size, shape, and layout. The density and so on are different. In the coupling simulation of two types of programs, the grid mapping and data transfer between programs are more difficult.
The scale of the whole core grid calculated by the physics program is in the millions. If each geometric description, grid division, and material property setting are manually set, the input method will be extremely complicated

Method used

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  • Physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling method and physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling system
  • Physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling method and physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling system
  • Physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling method and physical and thermotechnical coupling visualization full-reactor-core complex geometric modeling system

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Experimental program
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Effect test

Embodiment 1

[0067] Embodiment 1: A method for visualizing the complex geometric modeling of the whole core with physical thermal engineering coupling, such as figure 1 As shown, it is specifically implemented by the following steps.

[0068] Step 1, use the basic functions of AutoCAD to interactively draw the target shape to obtain the cell geometry.

[0069] Because AutoCAD has a powerful geometric description ability, it can draw various complex geometric figures. Therefore, the geometry of any shape can be interactively drawn through the functions such as straight lines, circles, and arcs provided by AutoCAD.

[0070] In step 2, the cell geometry is automatically identified through an automatic grid identification algorithm to obtain a polygonal grid.

[0071] AutoCAD can draw arbitrarily complex geometric figures, but it does not have the function of recognizing grids. If the relationship between the grid and the edge is manually identified, the process is very cumbersome and the e...

Embodiment 2

[0098] Embodiment 2: A physical-thermal-engineering coupled visualization full-core complex geometric modeling system, such as Figure 7 As shown, it includes a geometry drawing module, a grid recognition module, an attribute definition module, a first integration module, a channel construction module, a second integration module and an information output module.

[0099] Among them, the geometry drawing module is used to use the basic functions of AutoCAD to interactively draw the target shape to obtain the cell geometry; the grid recognition module is used to automatically recognize the cell geometry through the grid automatic recognition algorithm to obtain the polygon grid ;Property definition module, used to keep consistent polygonal grids for physical program meshing and thermal program meshing, and define physical and thermal properties on the basis of physical program grids to obtain corresponding cells Grid; physical properties include material type, material temperat...

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Abstract

The invention discloses a physical and thermal coupling visualization full-reactor-core complex geometric modeling method and system, and relates to the technical field of nuclear reactor core design, and the technical scheme is characterized in that the method comprises the steps: acquiring the lattice cell geometry through drawing; carrying out automatic identification on lattice cell geometry to obtain a polygonal mesh; carrying out physical and thermal attribute definition processing on the basis of grids divided by a physical program to obtain corresponding lattice cell grids; performing integration processing on the plurality of lattice cell grids to complete component and reflecting layer structure construction, and obtaining a component model; establishing sub-channel information of a thermal program on the basis of a component model established by a physical program to obtain a component lattice cell model; carrying out integrated processing on the plurality of assembly lattice cell models to obtain a full-reactor-core model; and outputting full-core information and a mapping relation between grids of a physical program and a thermal program in a specific format. According to the method, grid mapping and data transmission between the physical program and the thermotechnical program can be quickly, simply and conveniently carried out, and the coupling difficulty of the physical calculation program and the thermotechnical calculation program is reduced.

Description

technical field [0001] The invention relates to the technical field of nuclear reactor core design, and more specifically, relates to a method and system for visualizing complex geometric modeling of the whole core through physical thermal engineering coupling. Background technique [0002] The power calculated by the physical program will affect the fuel temperature, coolant density, and coolant temperature calculated by the thermal program, and these thermal hydraulic parameters will affect the fission cross section, which in turn will affect the power calculated by the physical program. Coupling calculation can simulate two mutual feedback processes on a detailed spatial scale, and more accurately predict the heat release, heat transfer and flow of the core. Coupling calculation is conducive to reducing the safety margin and supporting the increase of power station power and fuel cycle extend. [0003] However, due to the characteristics of their respective physical and ...

Claims

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Application Information

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IPC IPC(8): G06F30/10G06F30/23
CPCG06F30/10G06F30/23Y02T90/00
Inventor 涂晓兰柴晓明潘俊杰唐霄芦韡刘东安萍尹强冯晋涛马永强曾辉强胜龙陈定勇郭凤晨马党伟郑勇秦志红
Owner NUCLEAR POWER INSTITUTE OF CHINA
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