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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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

Citation:

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

[1]	TONG L L, ZOU J, CAO X W. Analysis on hydrogen risk mitigation in severe accidents for Pressurized Heavy Water Reactor[J]. Progress in Nuclear Energy, 2015, 80: 128-135. doi: 10.1016/j.pnucene.2014.12.011
[2]	许幼幼,彭欢欢,张明,等. 严重事故下小型安全壳内氢气风险分析[J]. 核动力工程,2020, 41(S2): 64-68.
[3]	彭程,邓坚. 安全壳大空间内氢气分层行为的模型研究[J]. 核动力工程,2021, 42(3): 155-159.
[4]	肖建军,周志伟,经荥清. 湍流模型对安全壳内氢气浓度场模拟的影响[J]. 原子能科学技术,2006, 40(6): 693-697. doi: 10.3969/j.issn.1000-6931.2006.06.012
[5]	王迪,曹学武. 不同湍流模型对氢气分布影响的数值研究[J]. 原子能科学技术,2016, 50(9): 1622-1628. doi: 10.7538/yzk.2016.50.09.1622
[6]	侯丽强,佟立丽,曹学武,等. 实验装置氢气混合的数值研究[J]. 核动力工程,2015, 36(S2): 146-150.
[7]	PENG C, TONG L L, CAO X W. Numerical analysis on hydrogen stratification and post-inerting of hydrogen risk[J]. Annals of Nuclear Energy, 2016, 94: 451-460. doi: 10.1016/j.anucene.2016.04.029
[8]	WILCOX D C. Turbulence modeling for CFD[M]. 2nd ed. La Caflada, CA: DCW Industry Incorporation, 1998: 87-89.
[9]	SONNENKALB M, POSS G. The international test programme in the THAI facility and its use for code validation[C]//EUROSAFE Forum. Brussels, Belgium, 2009.
[10]	EL-AMIN M F, KANAYAMA H. Similarity consideration of the buoyant jet resulting from hydrogen leakage[J]. International Journal of Hydrogen Energy, 2009, 34(14): 5803-5809. doi: 10.1016/j.ijhydene.2009.05.059
[11]	EL-AMIN M F. Non-Boussinesq turbulent buoyant jet resulting from hydrogen leakage in air[J]. International Journal of Hydrogen Energy, 2009, 34(18): 7873-7882. doi: 10.1016/j.ijhydene.2009.07.061