Unsteady response of chain-branching premixed-flames to pressure waves

Motivated by some recent experimental results that are incompatible with the standard one-step model, we present an analytical study of the unsteady response of flames to acoustic waves in the framework of a simple two-step chemistry model, using conditions that are appropriate to approximately desc...

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Bibliographic Details
Published in:Combustion theory and modelling 2008-06, Vol.12 (3), p.545-567
Main Authors: Clavin, P., Searby, G.
Format: Article
Language:English
Subjects:
Acoustics
Engineering Sciences
Mechanics
one-step model
Physics
pressure waves
Reactive fluid environment
transfer function
two-step model
unsteady flame response
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Summary:Motivated by some recent experimental results that are incompatible with the standard one-step model, we present an analytical study of the unsteady response of flames to acoustic waves in the framework of a simple two-step chemistry model, using conditions that are appropriate to approximately describe lean methane-air flames. The calculated response functions are qualitatively different from those obtained with the standard one-step model. The results are sufficiently encouraging to suggest that the analysis should be extended in the near future to more detailed kinetics schemes.
ISSN:1364-7830
1741-3559
DOI:10.1080/13647830701848972