Flame extinction by spatially periodic shear flows

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Abstract

The previously studied model for nearly extinguished non-adiabatic flames propagating through a quiescent gas is extended to account for the effects due to the background flow-field. It is shown that for moderately strong large-scale periodic shear flows, their intensification results in flame speed enhancement. Yet for high Lewis number flames, there is a certain level of the flow intensity at which the flame speed reaches its maximum followed by the flame quenching. This paper is motivated by the experimentally known phenomenon of flame extinction by turbulence.

Original languageEnglish
Pages (from-to)189-195
Number of pages7
JournalCombustion Theory and Modelling
Volume6
Issue number2
DOIs
StatePublished - 2002

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