The Effects of Wake Mixing on Compressor Aerodynamics

[+] Author and Article Information
R. P. Dring

United Technologies Research Center, East Hartford, CT 06108

D. A. Spear

Pratt and Whitney Aircraft, East Hartford, CT 06108

J. Turbomach 113(4), 600-607 (Oct 01, 1991) (8 pages) doi:10.1115/1.2929121 History: Received January 06, 1990; Online June 09, 2008


A methodology based on wake mixing has been developed that enables more accurate predictions of compressor airfoil pressure distributions when the airfoil is operating downstream of an airfoil row that has strong wakes. The methodology has an impact on throughflow analysis, on airfoil-to-airfoil flow analysis, and on the interpretation of experimental data. It is demonstrated that the flow in the endwall region is particularly sensitive to mixing due to the strong wakes caused by the secondary flow and corner separation that commonly occur in this region. It is also demonstrated that wake mixing can have a strong impact on both airfoil incidence and deviation as well as on loading. Differences of up to 13 deg and 30 percent in loading are demonstrated.

Copyright © 1991 by The American Society of Mechanical Engineers
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