Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Concentration Interaction of Premixed and Triple-layer Flames in Lean Burn with Methane Fuel

희박연소에서 발생하는 메탄의 농도 상호작용과 삼중화염에 대한 연구

  • Oh, Tae-Kyun (Department of Mechanical Engineering, Dongyang Technical College) ;
  • Chung, Suk-Ho (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 오태균 (동양공업전문대학 기계과) ;
  • 정석호 (서울대학교 기계항공공학부)
  • Published : 2006.11.01
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Abstract

The performance in the practical combustion system including reciprocating engines and gas turbine combustors is being much governed by turbulent reacting flow that is often analyzed by both a laminar flamelets concept and flame interaction. The characteristics of laminar flame interaction have been investigated numerically to provide basic understanding of wrinkled turbulent flames under concentration interaction resulting from inhomogeneity in fuel-air mixing, especially focused on the transition of flame characteristics such as diffusion flame, partially premixed diffusion flame, and triple-layer flame by the variation in the degree of premixedness. The extinction stretch rates to the premixedness have also been obtained in this paper. The boundary defining the regime of the existence of triple-layer flames as functions of both stretch rate and premixedness has been determined which agrees well with previously reported experiment measuring OH radical concentration peaks based on PLIF.

Keywords

References

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