Prediction of Heat Transfer in a Rotating Cavity With a Radial Outflow

[+] Author and Article Information
C. L. Ong, J. M. Owen

Thermo-Fluid Mechanics Research Centre, School of Engineering & Applied Sciences, University of Sussex, Falmer, Brighton, BN1 9QT, United Kingdom

J. Turbomach 113(1), 115-122 (Jan 01, 1991) (8 pages) doi:10.1115/1.2927729 History: Received February 14, 1989; Online June 09, 2008


Solutions of the differential boundary-layer equations, using the Keller-box scheme and the Cebeci-Smith eddy-viscosity model for turbulent flow, have been used to predict the Nusselt numbers on the disks of a heated rotating cavity with a radial outflow of cooling air. Computed Nusselt numbers were in satisfactory agreement with analytical solutions of the elliptic equations for laminar flow and with solutions of the integral equations for turbulent flow. For a wide range of flow rates, rotational speeds, and disk-temperature profiles, the computed Nusselt numbers were in mainly good agreement with measurements obtained from an air-cooled rotating cavity. It is concluded that the boundary-layer equations should provide solutions accurate enough for application to air-cooled gas turbine disks.

Copyright © 1991 by The American Society of Mechanical Engineers
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