• Title/Summary/Keyword: 열 및 질량확산 불안정성

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Investigation of Premixed Flame Instability with Heat and Momentum Losses (열 및 운동량 손실이 예혼합화염의 연소불안정성에 미치는 영향에 관한 연구)

  • Kang Sang Hun;Baek Seung Wook;Im Hong Geun
    • Journal of the Korean Society of Propulsion Engineers
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    • v.9 no.3
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    • pp.101-119
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    • 2005
  • 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.