Turbulent Transfer of Momentum and Heat in a Separated and Reattached Flow over a Blunt Flat Plate

[+] Author and Article Information
Terukazu Ota, Nobuhiko Kon

Department of Mechanical Engineering, Akita University, Akita 010, Japan

J. Heat Transfer 102(4), 749-754 (Nov 01, 1980) (6 pages) doi:10.1115/1.3244384 History: Received July 27, 1979; Online October 20, 2009


Turbulent shear stress and heat flux were measured with a hot-wire anemometer in the separated, reattached, and redeveloped regions of a two-dimensional incompressible air flow over a flat plate of finite thickness having blunt leading edge. The characteristic features of the turbulent heat flux are found to be nearly equal to those of the turbulent shear stress in the separated and reattached flow regions. However, in the turbulent boundary layer downstream from the reattachment point, the development of turbulent heat flux appears to be much quicker than that of turbulent shear stress. Eddy diffusivities of momentum and heat are evaluated and then the turbulent Prandtl number is estimated in the thermal layer downstream of reattachment. These results are compared with the available previous data.

Copyright © 1980 by ASME
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