Understanding methane flame kinetics from reduced mechanisms

G. Skevis, D. A. Goussis, E. Mastorakos

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Reduced mechanisms for laminar premixed methane-air flames are constructed on the basis of the GRI-3.0 detailed chemistry. It is demonstrated that significant understanding of the flame chemistry can be acquired by examining reduced mechanisms generated on the basis of either the full flame domain or specific subdomains, such as the preheat, the flame and the postflame zones. Reduced mechanisms of increasing number of steps generated by taking into account the full flame domain identify the parts of chemistry that relate to the slowest chemical time scales and thus dominate the overall flame structure. Observed differences in the reduced mechanisms of a given size generated on the basis of different regions of the flame distinguish the locally prevailing kinetic paths. The effects of inlet mixture composition on the dominant parts of chemistry are discussed.

Original languageBritish English
Pages (from-to)216-227
Number of pages12
JournalInternational Journal of Alternative Propulsion
Volume1
Issue number2-3
DOIs
StatePublished - 2007

Keywords

  • kinetic path
  • premixed flame
  • reduced mechanism

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