Wrinkling of spherically expanding flames

R. Addabbo, J. K. Bechtold, M. Matalon

Research output: Contribution to journalConference articlepeer-review

133 Scopus citations

Abstract

The onset of instability and subsequent development of cells on spherically expanding flames isexamined theoretically. The model used accounts for both hydrodynamic and diffusive-thermal effects and, incontrast to earlier theories, is valid for variable transport properties over a wide range of equivalence ratios. The analysis yields predictions for a number of flame properties, including growth rate of small disturbances, critical flame size for the instability onset, cell size beyond the threshold, and an estimate of the speed of the developing turbulent flame. It is shown that results using the more realistic temperature-dependent transport coefficients are more commensurate with experimental data concerning the critical conditions, that is, flame size or Peclet number, at the transition from one burning regime to another.

Original languageEnglish (US)
Pages (from-to)1527-1535
Number of pages9
JournalProceedings of the Combustion Institute
Volume29
Issue number2
DOIs
StatePublished - 2002
Event30th International Symposium on Combustion - Chicago, IL, United States
Duration: Jul 25 2004Jul 30 2004

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

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