Characteristics of non-premixed edge flames in a slot-jet counterflow

Min Suk Cha, Paul D. Ronney

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The propagation rates of advancing and retreating nonpremixed edge flames in a slot-jet counterflow were measured as a function strain rate for varying jet spacing, mixture strength, and stoichiometric mixture fractions (Z st). Methane was tested and nitrogen was used as an inert. As results, we could identify igniting fronts, retreating fronts, two total extinction limits, and short-length edge flames. A burner separation affected to a low extinction limit only, and for CH4/O2/N2 mixtures, regimes for advancing and retreating edges together with total extinction was mapped in terms of normalized flame thickness and heat loss factor. Edge flames for Zst > 0.5 behaved like a stronger mixture while for Zst < 0.5 showed deteriorated feature, because of relative locations of a nonpremixed flame and intermediate species such as CO and H2.

Original languageEnglish (US)
Title of host publication5th Asia-Pacific Conference on Combustion, ASPACC 2005
Subtitle of host publicationCelebrating Prof. Bob Bilger's 70th Birthday
Pages305-308
Number of pages4
StatePublished - 2005
Externally publishedYes
Event5th Asia-Pacific Conference on Combustion, ASPACC 2005 - Adelaide, SA, Australia
Duration: Jul 17 2005Jul 20 2005

Other

Other5th Asia-Pacific Conference on Combustion, ASPACC 2005
CountryAustralia
CityAdelaide, SA
Period07/17/0507/20/05

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

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