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Stretch effects extracted from propagating spherical premixed flames with detailed chemistry

Mishra, DP and Paul, PJ and Mukunda, HS (1994) Stretch effects extracted from propagating spherical premixed flames with detailed chemistry. In: 25th International Symposium on Combustion, JUL 31-AUG 05, 1994, IRVINE, CA.

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Official URL: http://dx.doi.org/10.1016/0010-2180(94)90144-9

Abstract

This paper is concerned with extracting stretch effects from outward propagating spherical flames with full chemistry. It is a continuation of a recently published study from this laboratory where it is shown that single-step chemistry is insufficient to explain the experimental results on methane, propane and hydrogen-air systems. Comparisons of the present full chemistry calculations with the experimental results for several fuel/air systems are good/excellent, with the exception of rich propane-air for which it is argued that soot chemistry with attendant radiation loss need to be invoked. The reversal in trends of stretch effects due to change in pressure, initial temperature and N-2 dilution (observed in experiments) can be predicted well by full chemistry but not with simple single-step chemistry. Analysis of the results shows the important role played by many intermediate species and explains why full chemistry is needed to predict stretch effects.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to Elsevier science.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 12 Apr 2011 11:59
Last Modified: 12 Apr 2011 11:59
URI: http://eprints.iisc.ernet.in/id/eprint/36834

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