Detonation initiation by a hot corrugated wall

A numerical simulation of premixed gas combustion spreading from a hot corrugated wall is performed. It is found that sufficiently deep corrugations may trigger an abrupt transition from deflagrative to detonative combustion. The effect is found to be highly sensitive to the flame’s normal speed and...

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Veröffentlicht in:	Proceedings of the Combustion Institute 2007, Vol.31 (2), p.2415-2420
Hauptverfasser:	Kagan, L., Liberman, M., Sivashinsky, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Combustion Combustion in unconfined systems Computer simulation Corrugating Deflagration-to-detonation transition Detonation Fysik Mathematical models NATURAL SCIENCES NATURVETENSKAP Physics Pressure dependence Spreading Walls
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Beschreibung
Zusammenfassung:	A numerical simulation of premixed gas combustion spreading from a hot corrugated wall is performed. It is found that sufficiently deep corrugations may trigger an abrupt transition from deflagrative to detonative combustion. The effect is found to be highly sensitive to the flame’s normal speed and the reaction rate pressure dependence, favoring fast flames and high-order reactions.
ISSN:	1540-7489 1878-027X 0082-0784 1873-2704
DOI:	10.1016/j.proci.2006.07.056