Research on the transient flow and vortex structure evolution mechanism of reactor coolant pump under non-uniform inflow

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Annals of Nuclear Energy Pub Date : 2025-03-19 DOI:10.1016/j.anucene.2025.111346

Long Yun, Wu Zhenguo, Zhang Mingyu, Xu Yuan

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Abstract

As the key equipment of the nuclear power plant, the performance of the reactor coolant pump (RCP) are directly related to the safe operation of the nuclear power plant. However, the non-uniform inflow affects the stable operation of RCP. In this article, the transient flow characteristics of the RCP under non-uniform inflow conditions are investigated by establishing a steam generator simulation equipment-reactor coolant pump (SGSE-RCP) coupling model for numerical simulation. The transient flow field inside the RCP under non-uniform inflow conditions is extracted. The Q criterion is used to extract and analyze the vortex structure distribution of the RCP under non-uniform inflow conditions. The influence mechanism of non-uniform inflow on the vortex structure inside the RCP is revealed. The research in this article deeply reveals the influence of non-uniform inflow on the flow of RCP, and provides support for further exploring the influence mechanism of non-uniform inflow on RCP.

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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.