Numerical study on soot formation in outwardly propagating, iso-octane, rich, cellular flames

Takashi Ikeda, Yoshihiro Tsuruda, Hiroaki Watanabe, Ryoichi Kurose, Toshiaki Kitagawa

Research output: Contribution to journalArticlepeer-review

Abstract

Soot formation in outwardly propagating iso-octane rich unstable cellular flames were investigated by means of a two-dimensional numerical simulation at mixture equivalence ratios of 1.4, 1.6, and 1.8. The formation of a cellular flame structure was observed as an indicator of flame instability. In addition, soot formation was found to be enhanced. The cusp area had a negative flame stretch rate; in contrast, the convex area had a positive flame stretch rate. This difference in stretch rate caused a lower flame front temperature and lower temperature gradient. It was also revealed that a difference in temperature in these areas might affect the soot surface growth, which was dependent on the C2H2 concentration in these areas.

Original languageEnglish
Article number121520
JournalFuel
Volume305
DOIs
Publication statusPublished - Dec 1 2021

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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