대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제26권4호
  • /
  • Pages.555-560
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  • 2002
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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산소부화된 자유롭게 전파하는 CH4/O2/N2예혼합화염의 화염구조

The Flame Structure of Freely Porpagating CH4/O2/N2Premixed Flames on the O2Enrichment

  • 이기용 (안동대학교 기계공학부) ;
  • 남태형 (안동대학교 대학원 기계공학과) ;
  • 유현석 (한국가스공사 연구개발원) ;
  • 최동수 (한국가스공사 연구개발원)
  • Lee, Gi-Yong (Dept.of Mechanical Engineering, Andong National University) ;
  • Nam, Tae-Hyeong (Dept.of Mechanical Engineering, Graduate School of Andong National University) ;
  • Yu, Hyeon-Seok (Research and Development Center, Korea Gas Corporation) ;
  • Choe, Dong-Su (Research and Development Center, Korea Gas Corporation)
  • 발행 : 2002.04.01
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초록

Numerical simulations of freely propagating flames burning stoichiometric CH$_4$/O$_2$/$N_2$mixtures are performed at atmospheric pressure in order to understand the effect of the $O_2$enrichment level on CH$_4$/Air flame. A chemical kinetic mechanism is employed, the adopted scheme involving 54 gas-phase species and 632 forward reactions. The calculated flame speeds are compared with the experiments for the flames established at several $O_2$enrichment level, the results of which is in excellent agreement. As a result of the increased $O_2$enrichment level from 0.21 to 1, the mole fraction of CO in the burred gas is increased. The flame speed and the temperature in the burned gas are also increased, but the thickness of the flame is severely shrunken in the preheat region. The maximum of the calculated EINO is obtained around 0.6 and 0.7 of the $O_2$enrichment level in cases of flames for fuel-lean mixtures.

키워드

참고문헌

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피인용 문헌

  1. Experimental and numerical study of CH4/CH3Cl/O2/N2 premixed flames under oxygen enrichment vol.42, pp.6, 2006, https://doi.org/10.1007/s10573-006-0106-7
  2. A Short Kinetic Mechanism for Premixed Flames of Aromatic Compound : Benzene vol.20, pp.4, 2015, https://doi.org/10.15231/jksc.2015.20.4.049