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Investigation of Premixed Flame Instability with Heat and Momentum Losses  

Kang Sang Hun (한국항공우주연구원 항공추진그룹)
Baek Seung Wook (한국과학기술원 항공우주공학과)
Im Hong Geun (미시건대 기계공학과)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.9, no.3, 2005 , pp. 101-119 More about this Journal
Abstract
For MEMS applications, the effects of the momentum and heat loss on the stability of laminar premixed flames in a narrow channel are investigated by high-fidelity numerical simulations. A general finding is that momentum loss promotes the Saffman-Taylor (S-T) instability which is additive to the Darrieus-Landau (D-L) instabilities, while the heat loss effects result in an enhancement of the diffusive-thermal (D-T) instability. These effects are also valid in nonlinear behavior of the premixed flame. The simulations of multiple cell interactions are also conducted with heat and momentum loss effects.
Keywords
Darrieus-Landau instability; Diffusive-thermal instability; Saffman-Taylor instability; Heat loss; Momentum loss;
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