Differential diffusion effects in Multiple Mapping Conditioning (MMC) mixing model

Dialameh, L., Cleary, M. J. and Klimenko, A. Y. (2013). Differential diffusion effects in Multiple Mapping Conditioning (MMC) mixing model. In: Mingming Zhu, Yu Ma, Yun Yu, Hari Vuthaluru, Zhezi Zhang and Dongke Zhang, Australian Combustion Symposium 2013: Proceedings. ACS2013: Australian Combustion Symposium 2013, Crawley, WA, Australia, (158-161). 6-8 November, 2013.

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Name Description MIMEType Size Downloads
Author Dialameh, L.
Cleary, M. J.
Klimenko, A. Y.
Title of paper Differential diffusion effects in Multiple Mapping Conditioning (MMC) mixing model
Conference name ACS2013: Australian Combustion Symposium 2013
Conference location Crawley, WA, Australia
Conference dates 6-8 November, 2013
Proceedings title Australian Combustion Symposium 2013: Proceedings
Journal name Proceedings of the Australian Combustion Symposium
Place of Publication Sydney, NSW, Australia
Publisher The Combustion Institute: Australia and New Zealand Section
Publication Year 2013
Sub-type Fully published paper
ISBN 1839-8170
Editor Mingming Zhu
Yu Ma
Yun Yu
Hari Vuthaluru
Zhezi Zhang
Dongke Zhang
Start page 158
End page 161
Total pages 4
Collection year 2014
Language eng
Formatted Abstract/Summary
This work introduces differential diffusion modeling within the MMC framework. The effect of differential diffusion on scalar variance decay is analysed and found to scale as Re-1/2. Modelling of this effect is achieved economically without increasing the number of MMC reference variables. The difference in variance decay of different scalars is simulated by introducing what in the present work is called the side-stepping method. This work also demonstrates the possibility modelling of a more refined and difficult to reproduce differential diffusion effect – loss of correlation between different scalars. MMC modelling of this effect needs two reference variables. The models are validated against the DNS results of Yeung and Pope [Physics of Fluids A: Fluid Dynamics, 5 (1993) 2467-2478].
Keyword MMC mixing model
PDF model
Differential diffusion
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Tue, 04 Mar 2014, 14:53:17 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering