Reactor multi-physics internal coupling method based on STL unified dynamic mesh

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-03-18 DOI:10.1016/j.anucene.2025.111377

Yungeng LI , Qingquan PAN , Xiaojing LIU

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引用次数: 0

Abstract

The Monte Carlo method is widely used in reactor multi-physics analysis due to its superior accuracy. However, it faces geometry incompatibility with multi-physics software. Traditional coupling relies on external interfaces and approximates geometric deformation. This study develops a high-fidelity Monte Carlo multi-physics coupling method; it has the following characteristics: (1) internal coupling between multi-physics fields; (2) a unified mesh for all physical fields; (3) dynamic mesh capabilities for geometric deformations; (4) partition adaptive STL model. Based on the irradiation neutronics platform Light, we develop a multi-physics coupling module, LightMP. It is internally coupled with the Monte Carlo neutronics module LightMC. This integration realizes high-fidelity “Neutronic-Thermal-Mechanical” coupling within a unified dynamic mesh. We tested it on a single channel and a 3 × 3 bundle of PWR. The results agreed with the reference values, proving the accuracy and robustness of this method.

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.