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Turbulence Heat and Mass Transfer 5. Proceedings of the International Symposium on Turbulence Heat and Mass Transfer
September, 25-29, 2006, Dubrovnik, Croatia

DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf


ISBN Print: 978-1-56700-229-4

ISSN: 2377-2816

Large Eddy Simulation of Wake-Near Wall Flow: Heat Transfer Modification

pages 183-186
DOI: 10.1615/ICHMT.2006.TurbulHeatMassTransf.280
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Краткое описание

The capability of large-eddy simulation LES to predict heat transfer (Prandtl number Pr = 0.7) in a high Reynolds number complex flow is investigated by considering a turbulent boundary layer disturbed by a detached obstacle. The upcoming momentum Reynolds number is Reθ = 5000, while the Reynolds number based on the windward length is Rec = 4300. The LES simulation uses a dynamic subgrid-scale SGS model and a standard law of the wall. The results compared to the existing experimental data are in good agreement. The solution captures correctly the vortex shedding phenomena and the near wall vortices. Furthermore, the washing action mechanism is identified as responsible for heat transfer variation downstream the obstacle, where a dissimilarity between heat and momentum transfer is observed.

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