Dynamic behavior of splitting flames in a heated channel

A. Fan, S. S. Minaev, E. V. Sereshchenko, Y. Tsuboi, H. Oshibe, H. Nakamura, K. Maruta

研究成果: Article査読

47 被引用数 (Scopus)

抄録

Flame-propagation dynamics with dual peaks in a heated microchannel is predicted by employing a thermal-diffusive model taking into account two reactants. After auto-ignition, the flame immediately splits into two reaction fronts with different luminosities. One front propagates upstream, whereas the other moves downstream, and finally they both extinguish. After some delay, the process is repeated, and reignition of the fuel-air mixture is induced by hot walls. It is also shown that the commonly used infinitely thin reaction zone model, which has no reactant concentration dependence, is not capable of capturing this phenomenon. The splitting flame dynamics with dual fronts is confirmed by photographs taken with a high-speed digital video camera in experimental investigations with a propane-air mixture. The experiments reveal interesting details, namely, coexistence of triple reaction peaks during the process of propagation of splitting flames is observed, and the flame splitting phenomenon occurs twice in one extinction-ignition period.

本文言語English
ページ(範囲)245-250
ページ数6
ジャーナルCombustion, Explosion and Shock Waves
45
3
DOI
出版ステータスPublished - 2009 5 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 燃料技術
  • エネルギー工学および電力技術
  • 物理学および天文学(全般)

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