Blade-Row Interaction in an Axial-Flow Subsonic Compressor Stage

[+] Author and Article Information
H. E. Gallus, J. Lambertz, Th. Wallmann

Institute for Jet Propulsion and Turbomachines, Technical University Aachen, West Germany

J. Eng. Power 102(1), 169-177 (Jan 01, 1980) (9 pages) doi:10.1115/1.3230218 History: Received December 18, 1978; Online September 28, 2009


This paper contains the results of the measurements of fluctuating pressures on the mid-span profile surfaces of both rotor and stator blades for several points of operation. By the aid of rotating probes behind the rotor, the shapes of the rotor wakes were measured, too. All the measurements have been performed twice, at first with guide vanes in front of the rotor, and afterwards without the latter. The results of the measurements are evaluated with respect to the parameters involved, like Strouhal-number, reduced frequency, and circumferential Mach number. The flow analysis is done for various wake-fields behind the rotor correspondent to different operation points. Emphasis is given to the establishment of correlations for the blade-row interaction and to the comparison of the measured pressure distributions with computed results according to well-known theoretical approaches.

Copyright © 1980 by ASME
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