Extinction Mechanism of Lean Premixed Flames in a Laminar Stagnation Point Flow

Yuji Yahagi, Toshihisa Ueda, Masahiko Mizomoto

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Effects of heat loss and flame stretch on the lean-limit extinction of laminar premixed flames in a stagnation point flow have been studied experimentally. The bulk stretch rate was varied from 40 s-1 to 420 s-1 while the Lewis number (Le) was varied from 0.85 to 1.8. The extinction of the lean propane/air flame (Le>1) is mainly caused by the flame stretch. On the other hand, the extinction of lean methane/air and lean methane/CCVC flames (Le<1) is caused not only by flame stretch but also by heat loss, since the flame is intensified by the Lewis number effect. Therefore, heat loss is predominant in the case of the lean methane/CO2-O2 flame whose Lewis number is smaller than that of the lean methane/air flame.

本文言語English
ページ(範囲)2878-2883
ページ数6
ジャーナルTransactions of the Japan Society of Mechanical Engineers Series B
58
553
DOI
出版ステータスPublished - 1992
外部発表はい

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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