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

IF 2.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Annals of Nuclear Energy Pub Date : 2025-07-01 Epub 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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非均匀进流条件下反应堆冷却剂泵的瞬态流动及涡结构演化机制研究

反应堆冷却剂泵作为核电站的关键设备，其性能的好坏直接关系到核电站的安全运行。然而，流入不均匀影响了RCP的稳定运行。本文通过建立蒸汽发生器模拟设备-反应堆冷却剂泵（SGSE-RCP）耦合模型进行数值模拟，研究了非均匀入流条件下RCP的瞬态流动特性。提取了非均匀入流条件下RCP内部的瞬态流场。采用Q准则提取和分析了非均匀入流条件下RCP的涡结构分布。揭示了非均匀入流对RCP内部涡结构的影响机理。本文的研究深入揭示了非均匀入流对RCP流动的影响，为进一步探索非均匀入流对RCP的影响机理提供了支持。

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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.