Effect of compressibility on laminar flame speed and its stabilizing effect on Darrieus-Landau instability of a premixed flame front

Keigo Wada, Yasuhide Fukumoto

研究成果: Contribution to conferencePaper査読

抄録

The compressibility effect on a premixed flame front is investigated for small Mach numbers Ma in terms of M2 expansions. We extend the method of matched asymptotic expansions to O(Ma2) in which a flame front consists of he reaction and the preheat zones, By an asymptotic analysis of the reaction zone, we establish a rapid decrease of the laminar flame speed S-L with Ma and a volumetric heat loss, of compressibility origin, brought by the pressure variation in the heat-conduction equation, which has been gone neglected in the zero-Mach-number limit. Together with O(Ma2) effect, this dramatic decrease in S-L brings in stabilization of the Darrieus-Landau instability, the linear instability of a plane flame front.

本文言語英語
出版ステータス出版済み - 2019
イベント12th Asia-Pacific Conference on Combustion, ASPACC 2019 - Fukuoka, 日本
継続期間: 7 1 20197 5 2019

会議

会議12th Asia-Pacific Conference on Combustion, ASPACC 2019
国/地域日本
CityFukuoka
Period7/1/197/5/19

All Science Journal Classification (ASJC) codes

  • 化学工学(全般)
  • エネルギー工学および電力技術
  • 燃料技術
  • 凝縮系物理学

フィンガープリント

「Effect of compressibility on laminar flame speed and its stabilizing effect on Darrieus-Landau instability of a premixed flame front」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル