한국연소학회:학술대회논문집
- 한국연소학회 2014년도 제49회 KOSCO SYMPOSIUM 초록집
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- Pages.135-137
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- 2014
초과엔탈피 화염의 점근 해석
An Asymptotic Analysis of Excess Enthalpy Flame
초록
Excess enthalpy flame propagating an porous inert medium, which recirculate exhaust heat to the upstream cold mixture, is theoretically analyzed. Using the activation-energy asymptotics, the flame structure is divided into the thin reaction and the gas-phase preheat zone, as is traditionally done. Ahead and behind of the two, there exist an outer preheat zone, where heat is convectively transferred from solid to gas, and a downstream re-equilibrium zone, where thermal equilibrium between phases is established. Asymptotic solutions of species and energy equations in each zone are obtained and then matched to each other, and finally the mass burning rate is obtained as a function of the flame propagation velocity with respect to the solid phase and physical properties of gas and solid.