Numerical simulation of diverging detonation in hydrogen air mixtures

Heidari, Ali and Wen, Jennifer (2015) Numerical simulation of diverging detonation in hydrogen air mixtures. In: The 6th International Conference on Hydrogen Safety (ICHS 2015); 19-21 Oct 2015, Yokohama, Japan.

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Abstract

Propagation and stability of diverging cylindrical detonation in hydrogen air mixture is numerically simulated and the mechanism of the transverse waves is analysed. For the numerical modelling, a new solver based on compressible, transient, reactive Navier–Stokes equations is developed which can the simulate detonation propagation and extinction in hydrogen-air mixture. A single step reaction mechanism is tuned to ensure the detonation and deflagration properties (in case of detonation failure) can be simulated accurately. The solver is used for modelling various detonation scenarios, in particular cylindrical diverging-detonations, because most of accidental industrial detonations start from a spark and then a diverging-detonation propagates outwards. The diverging-detonation, its cellular structure and adoption with the increased surface area at the detonation front, as well as interactions with obstacles leading to detonation failure and re-initiation are studied.

Item Type: Conference or Workshop Item (Paper)
Event Title: The 6th International Conference on Hydrogen Safety (ICHS 2015)
Organising Body: International Association for Hydrogen Safety (HySafe)
Additional Information: Presentation ID171
Research Area: Mechanical, aeronautical and manufacturing engineering
Faculty, School or Research Centre: Faculty of Science, Engineering and Computing > School of Mechanical and Automotive Engineering
Depositing User: Ali Heidari
Date Deposited: 02 Nov 2015 16:36
Last Modified: 02 Nov 2015 16:56
URI: http://eprints.kingston.ac.uk/id/eprint/31812

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