A multiple mapping conditioning model for differential diffusion

Dialameh, L., Cleary, M. J. and Klimenko, A. Y. (2014) A multiple mapping conditioning model for differential diffusion. Physics of Fluids, 26 2: . doi:10.1063/1.4864101

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Author Dialameh, L.
Cleary, M. J.
Klimenko, A. Y.
Title A multiple mapping conditioning model for differential diffusion
Journal name Physics of Fluids   Check publisher's open access policy
ISSN 1070-6631
1089-7666
Publication date 2014-02-01
Year available 2014
Sub-type Article (original research)
DOI 10.1063/1.4864101
Open Access Status File (Author Post-print)
Volume 26
Issue 2
Total pages 16
Place of publication College Park, MD, United States
Publisher American Institute of Physics
Language eng
Formatted abstract
This work introduces modeling of differential diffusion within the multiple mapping conditioning (MMC) turbulent mixing and combustion framework. The effect of differential diffusion on scalar variance decay is analyzed and, following a number of publications, is found to scale as Re−1/2. The ability to model the differential decay rates is the most important aim of practical differential diffusion models, and here this is achieved in MMC by introducing what is called the side-stepping method. The approach is practical and, as it does not involve an increase in the number of MMC reference variables, economical. In addition we also investigate the modeling of a more refined and difficult to reproduce differential diffusion effect – the loss of correlation between the different scalars. For this we develop an alternative MMC model with two reference variables but which also makes use of the side-stepping method. The new models are successfully validated against DNS results available in literature for homogenous, isotropic two scalar mixing.
Keyword Turbulent reactive flows
Raman-scattering measurements
Probability density-function
Lagrangian Fdf simulations
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Copyright 2014 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared inDialameh, L., Cleary, M. J. and Klimenko, A. Y. (2014) A multiple mapping conditioning model for differential diffusion. Physics of Fluids, 26 2: 025107 and may be found at http://dx.doi.org/10.1063/1.4864101

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2015 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
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