Characteristics of non-premixed methane flames in twin-jet counter flow

S. K. Ryu, K. W. Chun, T. G. Noh, S. H. Chung

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

1 Scopus citations

Abstract

The characteristics of non-premixed methane flames in twinjet counter flow have been investigated experimentally and numerically. A two-dimensional twin-jet counter flow burner, which is composed of two double-slit rectangular nozzles, has been utilized to investigate the interaction of two non premixed flames on extinction behaviour. A one-step overall reaction has been used in the numerical study. Various non premixed flames have been observed depending on the combination of fuel and oxidizer supply at each slit. A unique petal-shaped flame existed in the oxidizer sharing flame regime. It consisted of two quenched edges with negative edge speed in the direction toward the burned gas region and two propagating edges with positive edge speed in the direction toward the unburned mixture. Due to the existence of unique petal-shaped flame, the extinction boundary in the twin-jet counter flow extends as compared to that of the conventional counter flow flames. The OH radical concentration and temperature distribution in the region between two facing curved flames have been measured using OH-PLIF and numerical simulation, respectively.

Original languageEnglish (US)
Title of host publication5th Asia-Pacific Conference on Combustion, ASPACC 2005
Subtitle of host publicationCelebrating Prof. Bob Bilger's 70th Birthday
Pages365-368
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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