Deviation Angle Estimation for Axial-Flow Compressors Using Inviscid Flow Solutions

[+] Author and Article Information
M. J. Miller

Fluid Dynamics, The Trane Co., La Crosse, Wisc.

G. K. Serovy

Department of Mechanical Engineering and Engineering Research Institute, Iowa State University, Ames, Ia.

J. Eng. Power 97(2), 163-168 (Apr 01, 1975) (6 pages) doi:10.1115/1.3445946 History: Received November 27, 1973; Online July 14, 2010


Development of a more satisfactory method of estimating deviation angles was attempted using analytical procedures. Solutions for inviscid, irrotational flow in the blade-to-blade plane were obtained with a finite-difference calculation method. Deviation angles for three cascades with rounded trailing edges were estimated using the inviscid flow solutions and four existing trailing edge hypotheses. The estimated deviation angles were compared with experimental values for a range of incidence angle and inlet flow angle. None of the hypotheses were satisfactory at all incidence angles for all the cascades considered. An alternative hypothesis is presented which is suitable for one of the cascade profiles over a range of incidence and blade setting angle.

Copyright © 1975 by ASME
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