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Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Woolley, R.M., Fairweather, M. and Yunardi, Y. (2009) Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames. Fuel, 88 (3). pp. 393-407. ISSN 0016-2361

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Presented are results obtained from the incorporation of a semi-empirical soot model into a first-order conditional moment closure (CMC) approach to modelling turbulent, non-premixed methane–air and propane–air flames. Soot formation is determined via the solution of two transport equations for soot mass fraction and particle number density, with acetylene and benzene employed as the incipient species responsible for soot nucleation, and the concentrations of these calculated using a detailed gas-phase kinetic scheme involving 70 species. The study focuses on the influence of differential diffusion of soot particles on soot volume fraction predictions. The results of calculations are compared with experimental data for atmospheric and 3 atm methane flames, and propane flames with air preheated to 323 K and 773 K. Overall, the study demonstrates that the model, when used in conjunction with a representation of differential diffusion effects, is capable of accurately predicting soot formation in the turbulent non-premixed flames considered.

Item Type: Article
Copyright, Publisher and Additional Information: © 2009 Elsevier. This is an author produced version of a paper published in Fuel. Uploaded in accordance with the publisher's self archiving policy.
Keywords: CMC, soot, methane, propane, differential diffusion
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds)
Depositing User: Sherpa Assistant
Date Deposited: 26 Feb 2009 10:30
Last Modified: 08 Feb 2013 17:06
Published Version: http://dx.doi.org/10.1016/j.fuel.2008.10.005
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: 10.1016/j.fuel.2008.10.005
URI: http://eprints.whiterose.ac.uk/id/eprint/7917

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