Influence of inlet configurations on mixing and fluid retention in VCT

IF 2.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Annals of Nuclear Energy Pub Date : 2025-02-21 DOI:10.1016/j.anucene.2025.111293

Xiangyu Chi , Yaru Li , Bin Zhao , Naihua Wang , Pei Yu , Jiazhi Liu

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Abstract

The volume control tank (VCT) is a vital equipment in the chemical and volume control system (RCV). Its retention effect on the influent seriously affects the accuracy and the response speed of the reactor coolant system (RCS) boron concentration. This paper aims to study the influence of inlet configurations on mixing and fluid retention in VCT using a numerical method and provide guidance for the design of VCT. Seven feasible inlet configurations are proposed. Detailed concentration and velocity profiles are provided to analyze mixing and fluid retention mechanisms in VCT. The results show that fluid retention is closely related to mixing, and the weaker the mixing, the more intense the fluid retention. Config.-D-H, Config.-D-T, and Config.-D-P are advisable choices when minimizing the deviation between the actual and the target RCS concentrations is urgent. Config.-S-L is preferable when the rapid response of RCS boron concentration is crucial.

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入口结构对VCT混合和流体滞留的影响

容积控制箱（VCT）是化工及容积控制系统（RCV）中的重要设备。它对进水的滞留作用严重影响反应堆冷却剂系统（RCS）硼浓度的准确性和响应速度。本文旨在通过数值方法研究进口构型对VCT内混合和流体滞留的影响，为VCT的设计提供指导。提出了7种可行的进气道结构。提供了详细的浓度和速度曲线，以分析VCT中的混合和流体保留机制。结果表明，流体潴留与混合密切相关，混合越弱，流体潴留越强烈。配置。d h,配置。-D-T和Config。当迫切需要减小RCS实际浓度与目标浓度之间的偏差时，-D-P是可取的选择。配置。当对RCS硼浓度的快速响应至关重要时，-S-L是首选。

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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.