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International Journal of Rotating Machinery
Volume 7, Issue 3, Pages 209-222
http://dx.doi.org/10.1155/S1023621X01000197

Numerical Computation of Turbulent Flow and Heat Transfer in a Radially Rotating Channel with Wall Conduction

1Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30043, Taiwan
2Rotating Fluids and Vortex Dynamics Laboratory, Department of Aeronautical Engineering, Chung Cheng Institute of Technology, Tahsi, Taoyuan 33509, Taiwan

Received 8 July 2000; Revised 13 July 2000

Copyright © 2001 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work is concerned with numerical computation of turbulent flow and heat transfer in experimental models of a radially rotating channel used for turbine blade cooling. Reynolds-averaged Navier-Stokes and energy equations with a two-layer turbulence model are employed as the computational model of the flow and temperature fields. The computations are carried out by the software package of “CFX-TASCflow”. Heat loss from the channel walls through heat conduction is considered. Results at various rotational conditions are obtained and compared with the baseline stationary cases. The influences of the channel rotation, through-flow, wall conduction and the channel extension on flow and heat transfer characteristics are explored. Comparisons of the present predictions and available experimental data are also presented.