Effect of Lewis number on flame propagation through vortical flows

descriptionPublicationkeyboard_double_arrow_right Article 01 Aug 2005 English Publisher:Elsevier BVJournal:Combustion and Flame, volume 142, pages 235-240 (issn: 0010-2180,

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Authors: L. Kagan; G. Sivashinsky;

doi: 10.1016/j.combustflame.2005.03.010

Effect of Lewis number on flame propagation through vortical flows

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Abstract

The premixed gas flame spreading through an array of large-scale vortices is studied numerically. It is found that the flame speed is a nonmonotonic function of the stirring intensity. At sufficiently low Lewis numbers (Le 1. At Le 1 the deficient reactant is fully consumed up to the very quenching point. At Le<1, prior to the total extinction, part of the deficient reactant escapes the reaction zone and remains unconsumed.

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Tel Aviv University
Israel

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