Abstract
Large eddy simulation (LES) of turbulent heat transfer in an infinite channel has been used to compare the performance of several promising sub-filter-scale models for modelling the transport of a passive scalar. The dynamic mixed model and the dynamic reconstruction model (a higher order version of the mixed model) have been reported in the literature to perform very well in LES of turbulent flow. Here these models are tested to determine the model's suitability for modelling transport of a passive scalar. These models together with the dynamic Smagorinsky model and a no-model case, are tested at a Prandtl number of 0.71 and Reynolds number of 180 based on wall friction velocity and channel half width. Both the dynamic reconstruction model and the dynamic mixed model perform very well showing clear improvement in the prediction of the mean flow and other turbulent statistics compared to the no-model case. The standard dynamic Smagorinsky model without the additional reconstruction terms performs quite poorly.
| Original language | English |
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| Title of host publication | Proceedings of the 16th Australasian Fluid Mechanics Conference, 16AFMC |
| Place of Publication | Oxford |
| Publisher | Elsevier |
| Pages | 1427-1431 |
| Number of pages | 5 |
| ISBN (Print) | 9781864998948 |
| Publication status | Published - 2007 |
| Externally published | Yes |
| Event | 16th Australasian Fluid Mechanics Conference, 16AFMC - Gold Coast, QLD, Australia Duration: 3 Dec 2007 → 7 Dec 2007 |
Other
| Other | 16th Australasian Fluid Mechanics Conference, 16AFMC |
|---|---|
| Country/Territory | Australia |
| City | Gold Coast, QLD |
| Period | 3/12/07 → 7/12/07 |