Numerical study on characteristics of hydrogen deflagration and detonation in the combustion tube

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.2025.111382

Bo Liu, Shihao Wu, Xin Shi, Yapei Zhang, Yingwei Wu

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Abstract

In severe accidents for a nuclear power plant, the zirconium-water reaction may produce a huge amount of hydrogen. The hydrogen combustion and explosion produce heavy pressure and temperature loads, which may cause equipment damage and even containment failure. Based on previous experiments on detonation in the tube, this study established numerical models of hydrogen deflagration and detonation in the tube using the FLUENT software. The process of flame acceleration and onset of detonation was accurately simulated. Calculation and experimental results show that the detonation velocity increases with the increase of stoichiometric ratio, and the peak temperature and pressure reach the maximum when stoichiometric ratio is 1.2. The detonation velocity, peak temperature and pressure are positively correlated with the initial pressure. The verified models can be used to predict hydrogen explosion phenomenon and evaluate its consequences in pressurized water reactor containment under severe accidents.

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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.