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Modeling of mean flame shape during premixed flame flashback in turbulent boundary layers
SINTEF Energy Research, Trondheim, Norway.
SINTEF Energy Research, Trondheim, Norway.
Combustion Research Facility, Livermore, CA, United States.
Princeton University, Princeton, NJ, United States.
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2014 (English)In: Proceedings of the Combustion Institute, ISSN 0082-0784Article in journal (Refereed) Published
Abstract [en]

Direct numerical simulations of freely-propagating premixed flames in the turbulent boundary layer of fully-developed turbulent channel flows are used for a priori validation of a new model that aims to describe the mean shape of the turbulent flame brush during flashback. Comparison with the DNS datasets, for both fuel-lean and fuel-rich mixture conditions and for Damköhler numbers lower and larger than unity, shows that the model is able to capture the main features of the flame shape. Although further a priori and a posteriori validation is required, particularly at higher Reynolds numbers, this new simple model seems promising and can potentially have impact on the design process of industrial combustion equipment.

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Keyword [en]
Turbulent channel flow; Flame shape model; Turbulent premixed flame; Flame propagation
National Category
Other Physics Topics Other Mechanical Engineering
URN: urn:nbn:se:umu:diva-95848DOI: 10.1016/j.proci.2014.06.073OAI: diva2:761224
Available from: 2014-11-05 Created: 2014-11-05 Last updated: 2014-11-05

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Valiev, Damir
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Proceedings of the Combustion Institute
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