An Investigation of Convective Heat Transfer in a Rotating Coolant Channel

[+] Author and Article Information
J. O. Medwell, W. D. Morris

Department of Mechanical Engineering, University College, Swansea, Swansea SA2 8PP United Kingdom

J. Y. Xia, C. Taylor

Department of Civil Engineering, University College, Swansea, Swansea SA2 8PP United Kingdom

J. Turbomach 113(3), 354-359 (Jul 01, 1991) (6 pages) doi:10.1115/1.2927883 History: Received January 17, 1990; Online June 09, 2008


A numerical method is presented for the determination of heat transfer rates in a cylindrical cooling duct within turbine blades that rotate about an axis orthogonal to its own axis of symmetry. The equations of motion and energy are solved in conjunction with the k–ε model of turbulence using the finite element method. The predicted results are compared with experimental data and it is clearly demonstrated that conduction in the solid boundary must be taken into account if satisfactory agreement is to be achieved. Excluding these effects can lead to an overestimation of the maximum wall temperature by approximately 50 percent.

Copyright © 1991 by The American Society of Mechanical Engineers
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