한국분무공학회지 (Journal of ILASS-Korea)
- 제3권4호
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- Pages.43-49
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- 1998
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- 1226-2277(pISSN)
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- 2288-9051(eISSN)
화염 구조에 미치는 연료 및 당량비에 관한 연구
A Study on the Influence of Equivalence Ratio and Kinds of fuel in Flame Structure
- 박상규 (우석대학교, 자동차공학과) ;
- 최낙정 (익산대학, 자동차과) ;
- 산하박사 (나고야대학 기계공학과)
- Park, S.K. ;
- Choi, N.J. ;
- Yamashita, H.
- 발행 : 1998.12.31
초록
In order to clarify the effect of equivalence ratio and kinds of fule in flame structure, a numerical simulation of triple flame developed in a co-flowing methane-air and air stream was carried out by the elementary chemical reaction mechanism. The following conclusions were obtained. Equivalence ratio at which the apparent burning velocity is maximum is a little larger than that of the one-dimensional premixed flame. Apparent burning velocities are two times higher than that of the one-dimensional premixed flame for the methane-air. The flame thrusts out forward in the downstream of the boundary between mixture and air stream, and a part of the flow is bent and forks out in this protruding flame so that a triple flame is originated; this triple flame is composed of fuel rich and lean premixed flame branches and a diffusion flame branch. Near the equivalence ratio at which the burning velocity of rule-dimensional premixed flame is the largest the effect of one-dimensional premixed flame becomes large and the fuel rich premixed flame advances and becomes vertical to the flow direction.
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