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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2001.12
- 수록면
- 59 - 66 (8page)
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초록· 키워드
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Combustion characteristics of the stratified mixture were examined by the experiments using a constant volume bomb and the numerical simulations of counterflow premixed flame. We investigated the characteristics of the flame propagation to the lean region and examined the minimum equivalence ratio of the lean region that the flame generated in the rich region can propagate to, as the bulk quenching was found to occur in the over lean region.
In the experiments, the stratified mixture was formed in the constant volume bomb by the injection of gaseous propane into the lean propane-air mixture charge, whose equivalence ratio was less than the lower flammability limit of the premixed mixture. The flame generated in the fuel jet region propagated wide into the lean mixture charge region as the stoichiometry of the mixture charge was increased, even though the charge was too lean to ignite. This result shows the flame in the rich region propagates into the lean region by the "back-support" of the rich flame.
Numerical study of counterflow premixed flame was examined next in order to investigate the interaction between the rich flame and the lean region. Rich and lean mixtures were opposed and the stoichiometry of the lean mixture was varied widely. Reaction rate of the propane in the lean mixture was large when the equivalence ratio of the lean mixture was 0.40 or more.
In the experiments, the stratified mixture was formed in the constant volume bomb by the injection of gaseous propane into the lean propane-air mixture charge, whose equivalence ratio was less than the lower flammability limit of the premixed mixture. The flame generated in the fuel jet region propagated wide into the lean mixture charge region as the stoichiometry of the mixture charge was increased, even though the charge was too lean to ignite. This result shows the flame in the rich region propagates into the lean region by the "back-support" of the rich flame.
Numerical study of counterflow premixed flame was examined next in order to investigate the interaction between the rich flame and the lean region. Rich and lean mixtures were opposed and the stoichiometry of the lean mixture was varied widely. Reaction rate of the propane in the lean mixture was large when the equivalence ratio of the lean mixture was 0.40 or more.
목차
Abstract
1.Introduction
2.Experimental Apparatus and Procedures
3.Numerical Sumulation Method of Counterflow Flame
4.Experimental Results and Discussion
5.Simulation Results and Discussion
6.Conclusions
References
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