Heat release rate markers for premixed combustion

Zacharias M. Nikolaou, Nedunchezhian Swaminathan

Research output: Contribution to journalArticle

56 Citations (Scopus)
50 Downloads (Pure)

Abstract

The validity of the commonly used flame marker for heat release rate (HRR) visualization, namely the rate of the reaction OH+CH2O↔HCO+H2O is re-examined. This is done both for methane-air and multi-component fuel-air mixtures for lean and stoichiometric conditions. Two different methods are used to identify HRR correlations, and it is found that HRR correlations vary strongly with stoichiometry. For the methane mixture there exist alternative HRR markers, while for the multi-component fuel flame the above correlation is found to be inadequate. Alternative markers for the HRR visualization are thus proposed and their performance under turbulent conditions is evaluated using DNS data.

Original languageEnglish
Pages (from-to)3073-3084
Number of pages12
JournalCombustion and Flame
Volume161
Issue number12
Early online date16 Jun 2014
DOIs
Publication statusPublished - 31 Dec 2014

Keywords

  • direct numerical simulation
  • flame markers
  • heat release rate imaging
  • laser diagnostics
  • mild combustion
  • premixed combustion

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