Experimental study in H2/CO/CH4-air and H 2/CO/C3H8-air premixed flames. Part 2: cellular instabilities

Tran Manh Vu, Jeong Park, Jeong Soo Kim, Oh Boong Kwon, Jin Han Yun, Sang In Keel

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

Experiments in a constant pressure combustion chamber at room temperature and elevated pressures using schlieren system were conducted to investigate the cellular instabilities in hydrogen/carbon monoxide/methane (or propane-air premixed flames. In the present study, hydrodynamic and diffusional-thermal instabilities were evaluated to elucidate their effects to flame instabilities. Effective Lewis numbers of premixed flames with methane addition decrease for all of the cases. Meanwhile, the effective Lewis numbers with propane addition increase for lean and stoichiometric conditions, but they increase for rich and stoichiometric cases for hydrogen-enriched flames. With propane addition, the propensity for cells formation is significantly diminished whereas the cellular instabilities for hydrogen enriched flames are promoted. With methane addition, the similar behavior of cellularity is obtained, indicating that methane is not a candidate for suppressing cells formation in hydrogen/carbon monoxide/methane-air premixed flames.

Original languageEnglish
Title of host publicationExplosion, Shock Wave and High-Energy Reaction Phenomena, ESHP 2010
PublisherTrans Tech Publications
Pages71-76
Number of pages6
ISBN (Print)9783037850183
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventExplosion, Shock Wave and High-Energy Reaction Phenomena 2010 - Seoul, Korea, Republic of (South)
Duration: 1 Sep 20103 Sep 2010
Conference number: 3rd
https://www.scientific.net/MSF.673 (Proceedings)

Publication series

NameMaterials Science Forum
Volume673
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

ConferenceExplosion, Shock Wave and High-Energy Reaction Phenomena 2010
Abbreviated titleESHP 2010
Country/TerritoryKorea, Republic of (South)
CitySeoul
Period1/09/103/09/10
Internet address

Keywords

  • Carbon monoxide
  • Cellular instabilities
  • Hydrocarbon
  • Hydrogen
  • Premixed flame

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