Analytical expressions for the flame front speed in the downward combustion of thin solid fuels and comparison to experiments
dc.contributor.author
dc.date.accessioned
2013-03-15T09:33:14Z
dc.date.available
2013-03-15T09:33:14Z
dc.date.issued
2011
dc.identifier.issn
1539-3755
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dc.description.abstract
We derive analytical expressions for the propagation speed of downward combustion fronts of thin solid fuels with a background flow initially at rest. The classical combustion model for thin solid fuels that consists of five coupled reaction-convection-diffusion equations is here reduced into a single equation with the gas temperature as the single variable. For doing so we apply a two-zone combustion model that divides the system into a preheating region and a pyrolyzing region. The speed of the combustion front is obtained after matching the temperature and its derivative at the location that separates both regions.We also derive a simplified version of this analytical expression expected to be valid for a wide range of cases. Flame front velocities predicted by our analytical
expressions agree well with experimental data found in the literature for a large variety of cases and substantially improve the results obtained from a previous well-known analytical expression
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application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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Reproducció digital del document publicat a: http://dx.doi.org/10.1103/PhysRevE.84.026306
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© Physical Review E, 2011, vol. 84, núm. 2, p. 026306
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Articles publicats (D-EMCI)
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Tots els drets reservats
dc.title
Analytical expressions for the flame front speed in the downward combustion of thin solid fuels and comparison to experiments
dc.type
info:eu-repo/semantics/article
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info:eu-repo/semantics/openAccess
dc.embargo.terms
Cap
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
014957
dc.identifier.eissn
1550-2376