Premixed flames with nonbranching chain-reactions (structure and dynamics)

Liñán Martínez, Amable and Clavin, Paul (1987). Premixed flames with nonbranching chain-reactions (structure and dynamics). "Combustion and Flame", v. 70 ; pp. 137-159. ISSN 0010-2180.

Description

Title: Premixed flames with nonbranching chain-reactions (structure and dynamics)
Author/s:
  • Liñán Martínez, Amable
  • Clavin, Paul
Item Type: Article
Título de Revista/Publicación: Combustion and Flame
Date: 1987
ISSN: 0010-2180
Volume: 70
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Motopropulsión y Termofluidodinámica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

A description of the flame structure, and its response to wrinkling and unsteady perturbations, is given for a simplified multiple step reaction mechanism (representative for example of halogen-hydrogen reactions), involving a dissociation reaction, a nonbranching chain reaction, both with high activation energy, and a recombination reaction. We describe the changes in flame structure that take place with increasing values of the flame temperature. We encounter first a "merged" flame regime, for which the chemical reactions are confined to a thin zone, on the hot side of the flame, and the quasi-steady state approximation, applicable at lower flame temperatures can no longer be used. Then, we reach a slow recombination regime for which the radical is produced in a thin zone and diffuses out to recombine in the outer transport zones. New effects, due to the radical diffusivity on the flame dynamics, are found in this regime. Finally, in describing the flame structure for high enough flame temperatures, the effects of radical recombination can be neglected, but no longer the endothermic effect of dissociation.

More information

Item ID: 1300
DC Identifier: http://oa.upm.es/1300/
OAI Identifier: oai:oa.upm.es:1300
Official URL: http://www.sciencedirect.com/science//journal/00102180
Deposited by: Biblioteca ETSI Aeronauticos
Deposited on: 14 Jan 2009
Last Modified: 20 Apr 2016 06:46
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