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Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN:
1-56700-135-1 (Imprimer)

LARGE EDDY SIMULATION OF THE INFLUENCE OF HIGH FREE-STREAM TURBULENCE ON SPATIALLY EVOLVING BOUNDARY LAYER

Frederic Peneau
Institut de Mecanique des Fluides de Toulouse, av Pr Camille Soula, 31400 Toulouse FRANCE

Henri Claude Boisson
Institut de Mecanique des Fluides de Toulouse, av Pr Camille Soula, 31400 Toulouse FRANCE

Ned Djilali
Institute for Integrated Energy Systems and Department of Mechanical Engineering, University of Victoria, PO Box 1700, Victoria, BC V8W 2Y2, Canada

Résumé

The influence of a high free-stream turbulent field on a spatially evolving turbulent flat plate boundary layer is investigated using a Large Eddy Simulation (LES) with a dynamic mixed subgrid-scale model. The evolution of skin friction, heat transfer coefficient, flow and thermal field are presented. The impact of free-stream turbulence on shear stress and velocity profiles is minimal; whereas substantial heat transfer augmentations are predicted together with a modification of the temperature profiles in the logarithmic and wake regions.