Flame front configuration of turbulent premixed flames

被引:19
|
作者
Furukawa, J
Maruta, K
Hirano, T
机构
[1] Tokyo Metropolitan Tech Coll, Dept Engn Mech, Shinagawa Ku, Tokyo, Japan
[2] Tohoku Univ, Inst Fluid Sci, Aoba Ku, Sendai, Miyagi 980, Japan
[3] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo, Japan
关键词
D O I
10.1016/S0010-2180(97)00127-2
中图分类号
O414.1 [热力学];
学科分类号
摘要
The present study is performed to explore dependence of the wrinkle scale of propane-air turbulent premixed flames on the characteristics of turbulence in the nonreacting flow, burner size, and mixture ratio. The wrinkle scales are examined and expressed in the frequency distribution of the radii of flame front curvatures. The average wrinkle scale depends not only on the characteristics of turbulence in the nonreacting flow but also on burner diameter and mixture ratio. The average wrinkle scale of a lean propane-air flame is larger than those of the near stoichiometric and rich flames. The smallest wrinkle scale of turbulent premixed flame is in the range of 0.75-1.0 mm, which is much larger than the Kolmogorov scale of turbulence in the nonreacting flow. (C) 1998 by The Combustion Institute.
引用
收藏
页码:293 / 301
页数:9
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