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ISSN 961-91393-0-5
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 Year 2006
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806 pages
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Volume price - $246.00
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Large Eddy Simulation of Wake-Near Wall Flow: Heat Transfer Modification
S. Tabloul
Département Energétique Industrielle, Ecole des mines de Douai, 941, rue Charles Bourseul, B.P. 838, 59508 Douai Cedex, France
J.-L. Harion
Département Energétique Industrielle, Ecole des mines de Douai, 941, rue Charles Bourseul, B.P. 838, 59508 Douai Cedex, France
D. Bougeard
Département Energétique Industrielle, Ecole des mines de Douai, 941, rue Charles Bourseul, B.P. 838, 59508 Douai Cedex, France
B. Baudoin
Département Energétique Industrielle, Ecole des mines de Douai, 941, rue Charles Bourseul, B.P. 838, 59508 Douai Cedex, France
ABSTRACT
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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