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RESEARCH PAPERS

The Effect of Periodic Errors in Blade Setting on the Potential Incompressible Flow in Compressor Cascades

[+] Author and Article Information
R. M. M. El-Taher

Aeronautics Department, Cairo University, Egypt

M. R. A. Shaalan

College of Engineering, Riyadh University, Saudi Arabia

M. I. Rashed

Cairo University, Egypt

J. Fluids Eng 100(1), 22-30 (Mar 01, 1978) (9 pages) doi:10.1115/1.3448607 History: Received August 05, 1977; Online October 12, 2010

Abstract

An analysis is given for the potential incompressible flow through compressor cascades with periodic one-blade setting errors. The effects of three components of errors (chord-wise, cascadewise, and angular) on the cascade performance are predicted. It is shown that setting errors can produce substantial changes in the aerodynamic parameters of a given cascade. However, the cascade performance appears to be more sensitive to angular errors than it is to other types of error. The analysis, which is essentially a modified Schlichting approach, leads to “influence coefficients” that may be used to predict the effect of a periodic setting error in more than one blade on the loading of any of the cascade blades.

Copyright © 1978 by ASME
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