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The turbulent burning velocity of iso-octane/air mixtures

Lawes, M., Ormsby, M.P., Sheppard, C.G.W. and Woolley, R. (2012) The turbulent burning velocity of iso-octane/air mixtures. Combustion and Flame, 159 (5). pp. 1949-1959. ISSN 0010-2180

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Abstract

Turbulent burning velocities of iso-octane air mixtures have been measured for expanding flame kernels within a turbulent combustion bomb. High speed schlieren images were used to derive turbulent burning velocity. Turbulent velocity measurements were made at u’ = 0.5, 1.0, 2.0, 4.0, 6.0 m/s, equivalence ratios of 0.8, 1.0, 1.2, 1.4 and pressures of P = 0.1, 0.5, 1.0 MPa. The turbulent burning velocity was found to increase with time and radius from ignition, this was attributed to turbulent flame development. The turbulent burning velocity increased with increasing rms turbulent velocity, and with pressure; although differences were found in the magnitude of this increase for different turbulent velocities. Generally, raising the equivalence ratio resulted in enhanced turbulent burning velocity, excepting measurements made at the lowest turbulent velocity. The results obtained in this study have been compared with those evaluated for a number turbulent burning velocity correlations and the differences are discussed.

Item Type: Article
Copyright, Publisher and Additional Information: © 2012 Elsevier. This is an author produced version of a paper subsequently published in Combustion and Flame. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: premixed flame, turbulent flame, burning velocity
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Dr Robert Woolley
Date Deposited: 28 Aug 2012 09:18
Last Modified: 08 Feb 2013 17:39
Published Version: http://dx.doi.org/10.1016/j.combustflame.2011.12.0...
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: 10.1016/j.combustflame.2011.12.023
URI: http://eprints.whiterose.ac.uk/id/eprint/74430

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