Effects of Rotation on Blade Surface Heat Transfer: An Experimental Investigation

[+] Author and Article Information
R. W. Moss, R. W. Ainsworth, T. Garside

Department of Engineering Science, University of Oxford, Parks Road, Oxford, United Kingdom

J. Turbomach 120(3), 530-540 (Jul 01, 1998) (11 pages) doi:10.1115/1.2841750 History: Received February 01, 1997; Online January 29, 2008


Measurements of turbine blade surface heat transfer in a transient rotor facility are compared with predictions and equivalent cascade data. The rotating measurements involved both forward and reverse rotation (wake-free) experiments. The use of thin-film gages in the Oxford Rotor Facility provides both time-mean heat transfer levels and the unsteady time history. The time-mean level is not significantly affected by turbulence in the wake; this contrasts with the cascade response to free-stream turbulence and simulated wake passing. Heat transfer predictions show the extent to which such phenomena are successfully modeled by a time-steady code. The accurate prediction of transition is seen to be crucial if useful predictions are to be obtained.

Copyright © 1998 by The American Society of Mechanical Engineers
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