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ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

SIMILARITY AND DISSIMILARITY BETWEEN THE SURFACE HEAT TRANSFER AND THE FLOW STRUCTURE IN TURBULENT FLOWS OVER SURFACE-MOUNTED CUBES

Get access (open in a dialog) DOI: 10.1615/IHTC11.2410
pages 51-56

Résumé

The paper presents experimental results of the distributions of the local convective heat transfer, mean-flow and turbulence fields in a flow over cubes mounted at one of the walls of a plane channel. The local flow structure and its imprint on the cube faces are analysed in parallel with the local convective heat transfer and attempts are made to establish their correlation (or to detect a lack of it) in different flow regions. It was found that steep gradients existed in the heat transfer at the cube faces, in particular in regions of flow separation and reattachment. For these regions, dissimilarities between the wall shear stress and the convective heat transfer existed which were believed to be caused by the local temperature rise of the air in the recirculation bubble.