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Vented hydrogen deflagations in an ISO container

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Vendra, C. Madhav Rao and Wen, Jennifer X. (2017) Vented hydrogen deflagations in an ISO container. In: International Conference on Hydrogen Safety, Hamburg, Germany, 11-13 Sep 2017

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Official URL: https://www.hysafe.info/ichs2017/

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Abstract

The commercial deployment of hydrogen will often involve housing portable hydrogen fuel cell power units in 20-foot or 40-foot shipping containers. Due to the unique properties of hydrogen, hazards identification and consequence analysis is essential to safe guard the installations and design measures to mitigate potential hazards. In the present study, the explosion of a premixed hydrogen-air cloud enclosed in a 20-foot container of 20’ x 8’ x 8’.6” is investigated in detail numerically. Numerical simulations have been performed using HyFOAM, a dedicated solver for vented hydrogen explosions developed in-house within the frame of the open source computational fluid dynamics (CFD) code OpenFOAM toolbox. The flame wrinkling combustion model is used for modelling turbulent deflagrations. Additional sub-models have been added to account for lean combustion properties of hydrogen-air mixtures. The predictions are validated against the recent experiments carried out by Gexcon as part of the HySEA project supported by the Fuel Cells and Hydrogen 2 Joint Undertaking (FCH 2 JU) under the Horizon 2020 Framework Programme for Research and Innovation. The effects of congestion within the containers on the generated overpressures are also investigated.

Item Type: Conference Item (Paper)
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Hydrogen as fuel -- Combustion -- Mathematical models, Fluid dynamics, Containers
Official Date: 1 June 2017
Dates:
DateEvent
12 July 2017Updated
1 June 2017Accepted
18 April 2017Submitted
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
Grant agreement No 671461H2020 European Research Councilhttp://dx.doi.org/10.13039/100010663
Conference Paper Type: Paper
Title of Event: International Conference on Hydrogen Safety
Type of Event: Conference
Location of Event: Hamburg, Germany
Date(s) of Event: 11-13 Sep 2017
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