Suppression of instabilities in a premixed methane–air flame in a narrow channel via hydrogen/carbon monoxide addition

Kang, X., Gollan, R., Jacobs, P. A. and Veeraragavan, A. (2016) Suppression of instabilities in a premixed methane–air flame in a narrow channel via hydrogen/carbon monoxide addition. Combustion and Flame, 173 266-275. doi:10.1016/j.combustflame.2016.07.003


Author Kang, X.
Gollan, R.
Jacobs, P. A.
Veeraragavan, A.
Title Suppression of instabilities in a premixed methane–air flame in a narrow channel via hydrogen/carbon monoxide addition
Journal name Combustion and Flame   Check publisher's open access policy
ISSN 0010-2180
1556-2921
Publication date 2016-11-01
Year available 2016
Sub-type Article (original research)
DOI 10.1016/j.combustflame.2016.07.003
Open Access Status Not yet assessed
Volume 173
Start page 266
End page 275
Total pages 12
Place of publication New York, NY United States
Publisher Elsevier
Language eng
Formatted abstract
The effects of hydrogen and carbon monoxide addition on premixed methane/air flame dynamics in a heated narrow channel are numerically investigated using a time accurate, compressible flow solver along with the DRM-19 reaction mechanism. By adding a small amount of either H2 or CO, flame instabilities present for the pure CH4/air combustion in the form of flame-extinction and re-ignition could be effectively suppressed. This suppression can be attributed to a few important elementary reactions, that play a dominant role in contributing to the heat release rate, getting enhanced with H2 or CO addition. This leads to a higher flame propagation speed and a shorter flame-extinction period, and eventually leads to flame stabilisation after a few cycles of spatial oscillations.
Keyword Microcombustion
Suppression of instabilities
H2 addition
CO addition
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 14 Sep 2016, 20:53:27 EST by Anand Veeraragavan on behalf of School of Mechanical and Mining Engineering