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Simulations of flame acceleration and deflagration-to-detonation transitions in methane-air systems.

Authors
Kessler-DA; Gamezo-VN; Oran-ES
Source
Combust Flame 2010 Nov; 157(11):2063-2077
NIOSHTIC No.
20039822
Abstract
Flame acceleration and deflagration-to-detonation transitions (DDT) in large obstructed channels filled with a stoichiometric methane-air mixture are simulated using a single-step reaction mechanism. The reaction parameters are calibrated using known velocities and length scales of laminar flames and detonations. Calculations of the flame dynamics and DDT in channels with obstacles are compared to previously reported experimental data. The results obtained using the simple reaction model qualitatively, and in many cases, quantitatively match the experiments and are found to be largely insensitive to small variations in model parameters.
Keywords
Flammable-gases; Methanes; Gases; Gas-mixtures; Acceleration; Ignitability; Explosive-gases; Mining-industry; Mine-gases; Explosive-atmospheres; Confined-spaces; Natural-gas; Author Keywords: Deflagration-to-detonation transition; Methane-air explosions; Flame acceleration; Obstructed channels
Contact
D.A. Kessler, Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC, USA
CODEN
CBFMAO
CAS No.
74-82-8
Publication Date
20101101
Document Type
Journal Article
Fiscal Year
2011
NTIS Accession No.
NTIS Price
Issue of Publication
11
ISSN
0010-2180
Source Name
Combustion and Flame
State
DC
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