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The Effect of Strain Rate on a Premixed Laminar Flame

Darabiha, N. and Candel, S. M. and Marble, F. E. (1986) The Effect of Strain Rate on a Premixed Laminar Flame. Combustion and Flame, 64 (2). pp. 203-217. ISSN 0010-2180. doi:10.1016/0010-2180(86)90057-X.

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The structure of a strained premixed laminar flame is examined. The flame is formed in the vicinity of a stagnation point established by the counterflow of fresh mixture and hot combustion products. This ideal configuration analyzed by Libby and Williams [18] with activation energy asymptotics is here examined numerically. This allows an exact description of flame and flow structure and a calculation of the mass rate of reaction per unit flame area for the whole range of strain rates. Previous results obtained for intermediate and high strain rates are confirmed. However, for low strain rates the mass rate of reaction per unit flame area differs from that determined with large activation energy asymptotics. The present calculations also provide the exact value of the strain rate (or Damkiihler number) for which the partial extinction regime appears. If the strain rate is increased beyond that value the flame front develops on the hot side of the stagnation point. The reactive front first moves away from the stagnation point and then moves back toward that point for the very large values of the strain rate.

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Additional Information:© 1986 by N. Darabiha, S. M. Candel, and F. E. Marble. Published by Elsevier Science Publishing Co., Inc. Received 2 May 1985; revised 30 October 1985. This work has been supported by a CNRS ATP and an SNECMA contract. Part of this study was performed while one of us (F.E.M.) was on a sabbatical at Ecole Centrale. N. Darabiha and S. M. Candel wish to thank Y. Sadallah for his help in the initial development of the computer code used in this paper. All calculations were performed on an IBM 4341 computer made available to us by the IBM Co.
Group:Guggenheim Jet Propulsion Center
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Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Société Nationale d'Étude et de Construction de Moteurs d'Aviation (SNECMA)UNSPECIFIED
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Guggenheim Jet Propulsion CenterUNSPECIFIED
Issue or Number:2
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Official Citation:THE EFFECT OF STRAIN RATE ON A PREMIXED LAMINAR FLAME Combustion and flame [0010-2180] DARABIHA yr:1986 vol:64 iss:2 pg:203-217 Full Text
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21144
Deposited By: Ruth Sustaita
Deposited On:03 Dec 2010 18:27
Last Modified:09 Nov 2021 00:06

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