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Title: Numerical study of bluff-body non-premixed flame structures using laminar flamelet model
Authors: Hossain, Mamdud
Malalasekera, W.
Keywords: Laminar flamelet
Bluff-body
Local extinction
Issue Date: 2005
Publisher: Professional Engineering Publishing / © IMechE
Citation: HOSSAIN, M. and MALALASEKERA, W., 2005. Numerical study of bluff-body non-premixed flame structures using laminar flamelet model. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 219 (5), pp. 361-370
Abstract: A laminar flamelet model is applied for bluff-body stabilized flames to study the flow field, mixing pattern, and the flame structure at two different velocities. The k 1 turbulence model is applied for accounting the turbulence fluctuations. It is found that the recirculation zone dominates the near field, while the far field structure is similar to the jet flow. The intermediate neck zone is the intense mixing region. The computation shows that the fuel jet velocity has significant effect on the structure of the flow field, which in turn has significant effect on the combustion characteristics. The laminar flamelet model is found to be adequate for simulating the temperature and the flame composition inside the recirculation zone. The flamelet model has, however, failed to account for the local extinction in the neck zone. Possible limitation of the laminar flamelet model to predict the local extinction is discussed.
Description: This is an article from the journal, Proceedings of the IMechE, Part A: Journal of Power and Energy [© IMechE ]. It is also available at: http://journals.pepublishing.com/content/u14769311q0l680j/
Version: Published
DOI: 10.1243/095765005X28616
URI: https://dspace.lboro.ac.uk/2134/5696
ISSN: 0957-6509
Appears in Collections:Published Articles (Mechanical and Manufacturing Engineering)

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