Sensitivity analysis of internal flow distribution in the Tsinghua high flux reactor

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

Annals of Nuclear Energy Pub Date : 2025-03-13 DOI:10.1016/j.anucene.2025.111352

Yuan Huang, Meng Lv, Heng Xie, Lei Shi

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Abstract

This paper presents a simple approach for rapidly analyzing the flow distribution characteristics and sensitivity within the THFR (Tsinghua High Flux Reactor). Given the high flow rates and large mixing space provided by the upper and lower chambers in the high flux reactor, the flow network theory aligns well with these assumptions, resulting in good agreement between the theoretical calculations and CFD simulations. Based on the flow network theory, the sensitivity analysis of the internal structural flow areas within the reactor indicates that changes in the flow channel area typically dominate the impact; variations in the flow area of the larger control drums and external irradiation boxes have a more significant overall effect. In subsequent design iterations, adjusting the flow resistance distribution ratio among the branches can mitigate the impact of potential dimensional changes on the overall flow distribution. Meanwhile, variations in channel dimensions significantly alter the pressure drop, imposing higher demands on the pumps.

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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.