Development of an Experimental Correlation for Transonic Turbine Flow

[+] Author and Article Information
F. Martelli, A. Boretti

Department of Energetics, University of Florence, 50139 Firenze, Italy

J. Turbomach 109(2), 246-250 (Apr 01, 1987) (5 pages) doi:10.1115/1.3262092 History: Received January 20, 1986; Online November 09, 2009


Optimization of transonic turbine bladings over a broad range of operating conditions calls for better understanding of the relationship between blade profile loss and cascade geometric parameters. In fact, many of the experimental correlations published to date have failed to take into due consideration transonic effects, while others have considered far too few of the numerous geometric parameters affecting profile loss in transonic flows. Through examination of the experimental data gathered by some 20 authors regarding the effects of the most significant blading geometric parameters on profile losses, a loss correlation procedure has been developed. The procedure is especially advantageous in that it allows continuous updating as new experimental data become available.

Copyright © 1987 by ASME
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