Radiation extinction limit of counterflow premixed lean methane-air flames

Hongsheng Guo, Yiguang Ju, Kaoru Maruta, Takashi Niioka, Fengshan Liu

Research output: Contribution to journalArticlepeer-review

88 Scopus citations

Abstract

The application of the laminar flamelet concept to turbulent flame modeling requires a detailed understanding of stretched laminar flames. In this study, we used numerical methods, including arc-length continuation, to simulate the extinction characteristics of counterflow premixed fuel-lean, methane air flames. Attention was primarily paid to the effect of radiative heat loss on the extinction characteristics of these flames. The results show that at medium to low values of the stretch rate, the radiative heat loss has a particularly strong impact on the counterflow premixed fuel-lean, methane- air flames. It was also found that, in addition to the stretch extinction limit at a high stretch rate, there exits a radiation extinction limit at a low stretch rate. Furthermore, the relationship between these two extinction limits and the equivalence ratio is obtained.

Original languageEnglish (US)
Pages (from-to)639-646
Number of pages8
JournalCombustion and Flame
Volume109
Issue number4
DOIs
StatePublished - Jun 1 1997

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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