Influence of gas compression on flame acceleration in channels with obstacles

Vitaly Bychkov, V'yacheslav Akkerman, Damir Valiev, Chung K. Law

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The role of gas compressibility in flame acceleration in channels with obstacles is studied analytically. The theory is consistent with the mechanism of extremely fast flame acceleration in obstructed channels obtained recently by Bychkov et al. [Bychkov et al., Phys. Rev. Lett. 101 (2008) 164501]. The present theory accounts for small but finite gas compressibility through expansion for small initial Mach number up to the first-order terms. It is demonstrated that flame-generated compression waves moderate the acceleration process noticeably, and that, for finite but small gas compression, the theory is in good quantitative agreement with numerical simulations.

Original languageEnglish (US)
Pages (from-to)2008-2011
Number of pages4
JournalCombustion and Flame
Volume157
Issue number10
DOIs
StatePublished - Oct 1 2010

All Science Journal Classification (ASJC) codes

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

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