Numerical Study on Hydrogen Flow Distribution Characteristics in Small-Scale Space

被引：0
|
作者：
Liu H. [1 ]
Wu X. [1 ]
Xiang W. [1 ]
Liu J. [1 ]
Wu H. [1 ]
机构：
[1] Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., Shanghai
来源：
Hedongli Gongcheng/Nuclear Power Engineering | 2022年 / 43卷 / 02期
关键词：
Advanced small reactor; Hydrogen distribution; Numerical study; Small-scale space;
D O I：
10.13832/j.jnpe.2022.02.0204
中图分类号：
学科分类号：
摘要：
Different from the large space of nuclear power plant containment, in small-scale space such as containment compartment and advanced small reactor, the flow of mixed gas of hydrogen and steam is limited by the wall, and the gas flow cannot fully develop, which may lead to the accumulation of hydrogen in some locations and lead to hydrogen risk. In this paper, the distribution characteristics of hydrogen flow in small-scale space are studied by means of numerical simulation and theoretical analysis. It is found that under typical working conditions, a hydrogen concentration reserve area with relatively uniform hydrogen concentration distribution is formed in the upper part of the small-scale space, and the hydrogen concentration transition zone and high air concentration zone are formed in the middle and lower areas, respectively. With the increase of the momentum of the source term gas, the ability of the source term gas to enter the upper space increases, resulting in the increase of hydrogen concentration in the upper area of the space. This study can provide support for the follow-up hydrogen risk research and analysis of advanced small reactors. Copyright ©2022 Nuclear Power Engineering. All rights reserved.
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页码：204 / 211
页数：7
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