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Rayleigh-Taylor instability: Modelling and effect on coherent deflagrations

Keenan, James, Makarov, Dmitriy and Molkov, Vladimir (2014) Rayleigh-Taylor instability: Modelling and effect on coherent deflagrations. International Journal of Hydrogen Energy, 39 (35). pp. 20467-20473. [Journal article]

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URL: http://www.sciencedirect.com/science/article/pii/S0360319914009586

DOI: doi:10.1016/j.ijhydene.2014.03.230

Abstract

The modelling of Rayleigh-Taylor instability during premixed combustion scenarios is presented. Experimental data obtained from experiments undertaken by FM Global using their large-scale vented deflagration chamber was used to develop the modelling approach. Rayleigh-Taylor instability is introduced as an additional time-dependent, combustion enhancing, mechanism. It is demonstrated that prior to the addition of this mechanism the LES deflagration model under-predicted the experimental pressure transients. It is confirmed that the instability plays a significant role throughout the coherent deflagration process. The addition of the mechanism led to the model more closely replicating the pressure peak associated with the external deflagration.

Item Type:Journal article
Keywords:Deflagration Modelling Rayleigh-Taylor instability Venting
Faculties and Schools:Faculty of Art, Design and the Built Environment
Faculty of Art, Design and the Built Environment > School of the Built Environment
Research Institutes and Groups:Built Environment Research Institute
Built Environment Research Institute > Hydrogen Safety Engineering and Research Centre (HySAFER)
ID Code:29865
Deposited By: Mr James Keenan
Deposited On:19 Nov 2014 15:21
Last Modified:17 Oct 2017 16:15

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