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Title: Sensitivity analysis of LES-CMC predictions of piloted jet flames
Authors: Garmory, Andrew
Mastorakos, E.
Keywords: CMC
Extinction
LES
Non-premixed
Re-ignition
Issue Date: 2013
Publisher: © Elsevier
Citation: GARMORY, A. and MASTORAKOS, E., 2013. Sensitivity analysis of LES-CMC predictions of piloted jet flames. International Journal of Heat and Fluid Flow, 39 pp. 53 - 63.
Abstract: The sensitivity of Large Eddy Simulation with Conditional Moment Closure (LES-CMC) simulations of the Sandia piloted jet Flames D and F to various parameters have been investigated. It was found that while an LES grid may sufficiently resolve velocity fields, the conditional scalar dissipation rate obtained may still be affected by grid size due to the calculation of sub-grid scalar dissipation rate, and this can affect the degree of localised extinction predicted. A study of the relative size of the terms in the CMC equation during an extinction/reignition event showed that transport, including in the cross stream direction, plays a key role. The results are sensitive to the choice of inlet boundary conditions as extinction is only observed when the inert-mixing distributions in mixture fraction space are used as inlet conditions for the CMC equation in the primary jet and air jets.
Description: NOTICE: this is the author’s version of a work that was accepted for publication in International journal of heat and fluid flow. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International journal of heat and fluid flow, VOL 39, (Feb 2013). DOI: 10.1016/j.ijheatfluidflow.2012.11.007.
Sponsor: This work was supported by the European Commission (Project “TECCAE”).
Version: Accepted for publication
DOI: 10.1016/j.ijheatfluidflow.2012.11.007
URI: https://dspace.lboro.ac.uk/2134/17321
Publisher Link: http://dx.doi.org/10.1016/j.ijheatfluidflow.2012.11.007
ISSN: 0142-727X
Appears in Collections:Published Articles (Aeronautical and Automotive Engineering)

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