Heat Transfer in a Channel with a Porous Wall for Turbine Cooling Application

[+] Author and Article Information
L. L. Debruge

Wright–Patterson Air Force Base, Dayton, Ohio

L. S. Han

Department of Mechanical Engineering, Ohio State University, Columbus, Ohio

J. Heat Transfer 94(4), 385-390 (Nov 01, 1972) (6 pages) doi:10.1115/1.3449956 History: Received November 24, 1971; Online August 11, 2010


A method of cooling turbine blades internally by continuous injection through an interior baffle is analyzed. The analytical model consists of a two-dimensional channel formed by a solid wall (blade surface) and a porous plate (injection source). Based on incompressible- and laminar-flow assumptions, the velocity and the temperature fields are determined. The Nusselt numbers for a power-law surface-temperature variation are obtained and expressed in terms of the Prandtl and the Reynolds numbers. A related problem of cooling the turbine disk is also solved.

Copyright © 1972 by ASME
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