Extinction of interacting premixed flames: Theory and experimental comparisons

S. H. Chung, J. S. Kim, C. K. Law

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

The structure and extinction states of two interacting stretched premixed flames of unequal mixture concentrations and distinct fuel, oxidizer and thermal diffusivities are analyzed. Results show that the extinction behavior depends critically on the effective Lewis numbers of the mixtures in that flames with large Lewis numbers interact weakly such that extinction mainly depends on the concentration of the stronger flame, while flames with small Lewis numbers interact strongly such that extinction depends on the concentrations of both flames. Theoretical predictions identify the various extinction modes and satisfactorily explain the experimental results on the extinction boundaries of lean and rich methane/air and butane/air flames.

Original languageEnglish (US)
Pages (from-to)1845-1851
Number of pages7
JournalSymposium (International) on Combustion
Volume21
Issue number1
DOIs
StatePublished - 1988
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes

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