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Numerical study of hydrogen explosions in a refuelling environment and in a model storage room

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Wen, Jennifer X., Vendra, C. Madhav Rao and Tam, V. H. Y. (2010) Numerical study of hydrogen explosions in a refuelling environment and in a model storage room. International Journal of Hydrogen Energy, Volume 35 (Number 1). pp. 385-394. doi:10.1016/j.ijhydene.2009.10.052 ISSN 0360-3199.

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Official URL: http://dx.doi.org/10.1016/j.ijhydene.2009.10.052

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Abstract

Numerical simulations have been carried out for large scale hydrogen explosions in a refuelling environment and in a model storage room. For the first scenario, a high pressure hydrogen jet released in a congested refuelling environment was ignited and the subsequent explosion analysed. The computational domain mimics the experimental set up for a vertical downwards release in a vehicle refuelling environment experimentally tested by Shirvill et al. [6]. For completeness of the analysis, an analytical model has also been developed to provide the transient pressure conditions at nozzle exit. The numerical study is based on the traditional computational fluid dynamics (CFD) techniques solving Reynolds averaged Navier-Stokes equations. The Pseudo diameter approach is used to bypass the shock-laden flow structure in the immediate vicinity of the nozzle. For combustion, the Turbulent Flame Closure (TFC) model is used while the shear stress transport (SST) model is used for turbulence. In the second scenario, premixed hydrogen-air clouds with different hydrogen concentrations from 15% to 60% in volume were ignited in a model storage room. Analysis was carried out to derive the dependence of overpressure on hydrogen concentrations for safety considerations.

Item Type: Journal Article
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Journal or Publication Title: International Journal of Hydrogen Energy
Publisher: Elsevier BV
ISSN: 0360-3199
Official Date: 2010
Dates:
DateEvent
2010Published
Volume: Volume 35
Number: Number 1
Page Range: pp. 385-394
DOI: 10.1016/j.ijhydene.2009.10.052
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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