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Generative design method for special-shaped fuel structure of fast neutron reactor core

A fast neutron reactor and design method technology, applied in the field of nuclear power, can solve the problems of not being able to achieve the best heat transfer effect, heat transfer efficiency limited contact area and geometry, etc., to avoid the grid division process and reduce the risk of overheating , the effect of saving calculation time

Pending Publication Date: 2022-06-24
XI AN JIAOTONG UNIV +1
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Problems solved by technology

[0004] The traditional fuel structure of the existing fast neutron reactor is mainly a cylindrical rod structure, and the coolant flows around the fuel rod from bottom to top, forming a forced convection effect to achieve heat exchange, but its heat transfer efficiency is limited by the contact area and geometric shape. Constraints, in some cases, can not achieve the best heat transfer effect

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  • Generative design method for special-shaped fuel structure of fast neutron reactor core
  • Generative design method for special-shaped fuel structure of fast neutron reactor core
  • Generative design method for special-shaped fuel structure of fast neutron reactor core

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Embodiment Construction

[0087] In order to make the technical solution of the present invention clearer, the implementation of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0088] refer to figure 1 , a generative design method for a fast neutron core special-shaped fuel structure, comprising the following steps:

[0089] 1) Set working conditions:

[0090] A certain type of core special-shaped fuel structure assumes a working condition, a cylinder with a length of 200 mm and a diameter of 20 mm is used as the design domain, the coolant is water, and the material of the core special-shaped fuel structure is simplified as a solid uranium dioxide ceramic pellet, The surrounding walls are thermally insulated, the center temperature of the special-shaped fuel structure of the core is constant at 500 degrees, and the initial temperature of the coolant is 20 degrees. The initial structure is as follows: figure 2 shown;

[0091] 2) ...

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Abstract

The invention discloses a generative design method for a special-shaped fuel structure of a fast neutron reactor core. A particle discretization method is combined with a transient heat transfer theory to construct a fast neutron reactor core temperature field simulation solving tool; physical parameters of the control particles are changed by means of isogeometric mapping to push the shape and size of the fuel structure to change, and an optimal structure is found through loop iteration; according to the method, the isogeometric analysis method is adopted to design the special-shaped fuel structure, the complicated grid division process is avoided, and the calculation time is saved; self-adaptive mesh refinement can be realized to obtain an optimal heat transfer structure; the design boundary is described by a function, the structure contour is clearer, and the design precision is higher.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a generative design method for a fast neutron core special-shaped fuel structure. Background technique [0002] As an efficient and clean energy, nuclear energy has great scientific research value. Compared with traditional fossil energy, it has abundant reserves, no pollutants, and high power generation efficiency. With the increasing global demand for energy, many countries in the world are in Pay close attention to and actively carry out research and construction related to nuclear power. [0003] As the core component, the fuel structure is very important for the fast neutron reactor. On the one hand, excellent structural design can avoid the thermal stress caused by high temperature from damaging the fuel structure and ensure the working stability of the fast neutron reactor. On the other hand, it can improve the fuel and cooling The heat transfer effect of the liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/25G06F30/28G06F30/10G06F17/11G06F119/08
CPCG06F30/25G06F30/28G06F30/10G06F17/11G06F2119/08
Inventor 李宝童光宏昊陆祺刘策邓坚洪军
Owner XI AN JIAOTONG UNIV
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