Method for establishing fast neutron reactor fuel assembly grid model under flow blocking condition

A fuel assembly and grid model technology, applied in data processing applications, special data processing applications, instruments, etc., can solve problems such as poor economy, cumbersome work, repetition, etc., achieve model independence, reduce repetitive workload, Method flexible effect

Active Publication Date: 2019-12-20
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, using the traditional grid division method, it is necessary to divide multiple sets of calculation grids under different flow blocking conditions, which is cumbersome and repetitive, and the economy is not strong

Method used

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  • Method for establishing fast neutron reactor fuel assembly grid model under flow blocking condition
  • Method for establishing fast neutron reactor fuel assembly grid model under flow blocking condition
  • Method for establishing fast neutron reactor fuel assembly grid model under flow blocking condition

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Embodiment Construction

[0029] The following combination Figure 4 In the flow chart shown, a hexagonal fuel assembly used in a typical fast neutron reactor is taken as an example to further describe the present invention in detail.

[0030] The present invention provides a method for establishing a fast neutron reactor fuel assembly grid model under flow blocking conditions, comprising the following steps:

[0031] Step 1: Create the 3D geometric model of the fast neutron reactor fuel assembly under the condition of unblocked flow through the geometric model building software solidworks according to the real design. This 3D geometric model includes the 3D geometric model of 19 fuel rods, The geometric model of the winding wire and the 3D geometric model of the hexagonal fuel assembly box wall;

[0032] Step 2: Establish a solid geometry that is exactly the same as the outer contour of the three-dimensional geometric model of the fast neutron reactor fuel assembly obtained in step 1 in the solidwork...

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Abstract

The invention discloses a method for establishing a fast neutron reactor fuel assembly grid model under a flow blocking condition. The method comprises the following steps: establishing a three-dimensional geometric model of a fast neutron reactor fuel assembly according to real design parameters; establishing a fluid domain model of the unblocked fast neutron reactor fuel assembly; carrying out unstructured tetrahedral mesh generation on the fluid domain model of the unblocked fast neutron reactor fuel assembly by using mesh generation software; performing grid marking operation on the flow blocking position according to calculation requirements, and adding a resistance source item which is three orders of magnitudes larger than the resistance source item in the other two directions in the flowing direction of the coolant. According to the method, the position, shape and size of the blocked area can be flexibly adjusted, and repeated geometric modeling work is avoided.

Description

technical field [0001] The invention belongs to the technical field of fast neutron reactor fuel assemblies, and in particular relates to a method for establishing a fast neutron reactor fuel assembly grid model under flow blocking conditions. Background technique [0002] While the large-scale development of nuclear power brings economic benefits, it encounters problems such as the shortage of uranium resources and the impact of long-lived radioactive waste on the environment. Fast neutron reactors are a practical and feasible technical way to solve this problem. Fast neutron reactors represented by sodium-cooled fast reactors were announced as one of the sixth generation fourth-generation advanced reactors at the International Forum on Generation IV Nuclear Energy Systems in 2002. The reactor type with the most application prospects and fast development process. Fast neutron reactors have attracted the attention of countries all over the world because of their outstanding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
CPCG06Q50/06
Inventor 王明军李俊房迪田文喜秋穗正苏光辉
Owner XI AN JIAOTONG UNIV
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