On flame–flow interaction in forward smoldering

Departing from the classical Burke–Schumann theory for diffusion flames, a reduced model for the description of the evolving wave front in forward smoldering is derived. The model is then used to describe the fingering instability induced by the increase in porosity, which results from the solid fue...

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Bibliographic Details
Published in:Combustion and flame 2008-05, Vol.153 (3), p.490-495
Main Authors: Brailovsky, Irina, Gordon, Peter, Sivashinsky, Gregory
Format: Article
Language:English
Subjects:
Applied sciences
Combustion
Combustion. Flame
Depletion
Diffusion flames
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Instability
Mathematical models
Porosity
Smoldering
Theoretical studies
Theoretical studies. Data and constants. Metering
Wave fronts
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Summary:Departing from the classical Burke–Schumann theory for diffusion flames, a reduced model for the description of the evolving wave front in forward smoldering is derived. The model is then used to describe the fingering instability induced by the increase in porosity, which results from the solid fuel depletion. The cusp-leading nature of the fingering pattern is revealed, which is opposite to the cusp-trailing structure typical of premixed gas cellular/wrinkled flames.
ISSN:0010-2180
1556-2921
DOI:10.1016/j.combustflame.2008.03.006