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

Liu Hanchen; Wu Xinzhuang; Xiang Wenjuan; Liu Jie; Wu Huiping

doi:10.13832/j.jnpe.2022.02.0204

Volume 43 Issue 2

Apr. 2022

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Article Navigation > Nuclear Power Engineering > 2022 > 43(2): 204-211

Liu Hanchen, Wu Xinzhuang, Xiang Wenjuan, Liu Jie, Wu Huiping. Numerical Study on Hydrogen Flow Distribution Characteristics in Small-Scale Space[J]. Nuclear Power Engineering, 2022, 43(2): 204-211. doi: 10.13832/j.jnpe.2022.02.0204

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Liu Hanchen, Wu Xinzhuang, Xiang Wenjuan, Liu Jie, Wu Huiping. Numerical Study on Hydrogen Flow Distribution Characteristics in Small-Scale Space[J]. Nuclear Power Engineering, 2022, 43(2): 204-211. doi: 10.13832/j.jnpe.2022.02.0204

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

doi: 10.13832/j.jnpe.2022.02.0204

Shanghai Nuclear Engineering Research and Design Institute Co., Ltd., Shanghai, 200233, China

Received Date: 2021-03-22
Rev Recd Date: 2021-09-15
Publish Date: 2022-04-02

Abstract

Abstract

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.
- Hydrogen distribution,
- Advanced small reactor,
- Small-scale space,
- Numerical study

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References(11)

References

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