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Lookup NU author(s): Dr Umair Ahmed
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Springer, 2018.
For re-use rights please refer to the publisher's terms and conditions.
This paper examines the effects of scalar dissipation rate modelling on mean reaction rate predictions in turbulent premixed flames. The sensitivity of the mean reaction rate is explored by using different closures for scalar dissipation and the sensitivity of the scalar dissipation models themselves is also examined with respect to their defining constants. The influence of different scalar dissipation models on the flame location and mean velocities is reported and compared with experimental results. The predicted reaction rate is found to be sensitive to the choice of closure used for scalar dissipation and also to the respective constants used in the scalar dissipation models. It is also found that the scalar dissipation models involving chemical and turbulent time scales yield a more physically plausible reaction rate when compared with the scalar dissipation models relying only on the turbulent time scale.
Author(s): Ahmed U, Prosser R
Publication type: Article
Publication status: Published
Journal: Flow, Turbulence and Combustion
Print publication date: 01/01/2018
Online publication date: 14/06/2017
Acceptance date: 29/05/2017
Date deposited: 05/08/2018
ISSN (print): 1386-6184
ISSN (electronic): 1573-1987
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