Direct numerical simulations of passive scalars: effect of initial mixture fraction distribution on timescales
Paper
Paper/Presentation Title | Direct numerical simulations of passive scalars: effect of initial mixture fraction distribution on timescales |
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Presentation Type | Paper |
Authors | du Preez, M. (Author) and Wandel, Andrew P. (Author) |
Editors | Zhang, Dongke |
Journal or Proceedings Title | Proceedings of the 7th Australian Combustion Symposium (ACS 2013) |
ERA Conference ID | 42521 |
Number of Pages | 4 |
Year | 2013 |
Place of Publication | Perth, Australia |
Web Address (URL) of Paper | http://cfe.uwa.edu.au/news/acs2013 |
Conference/Event | 7th Australian Combustion Symposium (ACS 2013) |
Australian Combustion Symposium | |
Event Details | Australian Combustion Symposium Rank C C C C C C C C C C C C C |
Event Details | 7th Australian Combustion Symposium (ACS 2013) Event Date 06 to end of 08 Nov 2013 Event Location Perth, Australia |
Abstract | An investigation into the relationship between the conditional dissipation timescale and integral timescale is conducted using Direct Numerical Simulations (DNS). Specifically, the effect of the initial mixture fraction distribution is explored for passive scalar cases. Results where the initial distribution can be modelled by a beta-function distribution are compared to previous results which can be modelled using a Gaussian distribution. It is found that the behaviour of the conditional dissipation timescale is similar for the two cases and the same steady-state condition is obtained. This suggests that the behaviour of the conditional dissipation timescale is independent of the initial distribution. |
Keywords | direct numerical simulations; scalar timescales |
ANZSRC Field of Research 2020 | 401213. Turbulent flows |
401204. Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics) | |
Public Notes | This publication is copyright. It may be reproduced in whole or in part for the purposes of study, research, or review, but is subject to the inclusion of an acknowledgment of the source. |
Byline Affiliations | Computational Engineering and Science Research Centre |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2209/direct-numerical-simulations-of-passive-scalars-effect-of-initial-mixture-fraction-distribution-on-timescales
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