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Methodology of CFD analysis for evaluating H-2 explosion accidents in an open space

Type of Publication
Year of Publication
2015
Authors

H.Seok Kang; H.Cheon No; S.Baik Kim; M.Htuan Kim

Abstract

One of the critical regulation issues for the development of a very high temperature reactor (VHTR) with a hydrogen production facility is the safety distance between a VHTR and a hydrogen production facility. The multi-energy method (MEM) was found as the effective correlation because it predicts an overpressure buildup rising from a detonation shock to a weak explosion. However, the MEM has several drawbacks that include the inability to predict an asymmetric explosion phenomenon. Therefore, we developed a CFD analysis methodology for predicting an overpressure buildup caused by a hydrogen explosion with an error range of approximately 30%2on the basis of test results. Furthermore, we observed the important physics of hydrogen explosion due to the small-scale obstacle through a comparison between the CFD results and the test results. The obstacle structure may delay the pressure wave propagation and give rise to a superposition of the pressure waves. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

DOI

10.1016/j.ijhydene.2014.12.057

Volume

40

Notes

Times Cited: 0 0

Pagination

3075-3090

Number
7
ISSN Number

0360-3199

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