Performance Prediction of Straight Compressor Cascades Having an Arbitrary Profile Shape

[+] Author and Article Information
J. Citavý

National Research Institute for Machine Design (SVÚSS), Prague, Czechoslovakia

J. Turbomach 109(1), 114-122 (Jan 01, 1987) (9 pages) doi:10.1115/1.3262056 History: Received January 27, 1986; Online November 09, 2009


A semi-analytical method of predicting losses and deviation angle for an arbitrary straight compressor cascade has been derived. The method has been developed at SVÚSS and is based upon the solution of the direct cascade problem using the following sources: (i) a potential flow calculation; (ii) attached boundary layer techniques; and (iii) experimental cascade data for separated flow. As an example of an application of the method, simple relations between geometric and aerodynamic cascade parameters have been derived by doing a systematic set of calculations for about 100 cascade configurations which had a 65-series blade profile and were run at low speed. The derived semi-analytical correlation has been compared to the published semi-empirical method of NASA for 65-series aerofoils, to experiments on cascades, and to results from a low-speed compressor.

Copyright © 1987 by ASME
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