Flame propagation in a nonuniform mixture: analysis of a slowly varying triple flame

Dold, J W (1989) Flame propagation in a nonuniform mixture: analysis of a slowly varying triple flame. Combustion and Flame, 76. pp. 71-88.

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Abstract

For flames propagating through a nonuniform medium a three-flame structure is described. This consists of a feul-rich premixed flame, a feul-lean premixed flame, and, starting where these flames meet, a diffusion flame. Such formations have been observed experimentally and probably occur as laminar flamelets in turbulent diffusion flames. A low-heat-release model for such flame structures is developed and solutions are obtained in the limit of slowly varying premixed flames. Under these conditions, it is shown that the Triple-Flame propagation speed depends on the transverse mixture fraction gradient and is bounded from above by the maximum adiabatic laminar flame speed of the system.

Item Type: Article
Subjects: MSC 2010, the AMS's Mathematics Subject Classification > 35 Partial differential equations
MSC 2010, the AMS's Mathematics Subject Classification > 41 Approximations and expansions
PACS 2010, the AIP's Physics and Astronomy Classification Scheme > 80 INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY > 82 Physical chemistry and chemical physics molecular physics
Depositing User: Prof John Dold
Date Deposited: 23 May 2007
Last Modified: 20 Oct 2017 14:12
URI: http://eprints.maths.manchester.ac.uk/id/eprint/805

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