CFD Application to Hydrogen Risk Analysis and PAR Qualification | Zendy

Jinbiao Xiong | Zendy; Yanhua Yang | Zendy; Cheng Xu | Zendy

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CFD Application to Hydrogen Risk Analysis and PAR Qualification

Author(s) -

Jinbiao Xiong,

Yanhua Yang,

Cheng Xu

Publication year - 2009

Publication title -

science and technology of nuclear installations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.417

H-Index - 24

eISSN - 1687-6083

pISSN - 1687-6075

DOI - 10.1155/2009/213981

Subject(s) - computational fluid dynamics , nuclear engineering , nuclear power plant , hydrogen , computation , coolant , engineering , mechanics , materials science , mechanical engineering , chemistry , computer science , physics , nuclear physics , organic chemistry , algorithm

A three dimensional computation fluid dynamics (CFD) code, GASFLOW, is applied to analyze the hydrogen risk for Qinshan-II nuclear power plant (NPP). In this paper, the effect of spray modes on hydrogen risk in the containment during a large break loss of coolant accident (LBLOCA) is analyzed by selecting three different spray strategies, that is, without spray, with direct spray and with both direct and recirculation spray. A strong effect of spray modes on hydrogen distribution is observed. However, the efficiency of the passive auto-catalytic recombiners (PAR) is not substantially affected by spray modes. The hydrogen risk is significantly increased by the direct spray, while the recirculation spray has minor effect on it. In order to simulate more precisely the processes involved in the PAR operation, a new PAR model is developed using CFD approach. The validation shows that the results obtained by the model agree well with the experimental results

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