Mean Velocity and Decay Characteristics of the Near and Far-Wake of a Compressor Rotor Blade of Moderate Loading

[+] Author and Article Information
A. Ravindranath, B. Lakshminarayana

Department of Aerospace Engineering, The Pennsylvania State University, University Park, PA 16802

J. Eng. Power 102(3), 535-547 (Jul 01, 1980) (13 pages) doi:10.1115/1.3230296 History: Received January 03, 1979; Online September 28, 2009


This paper reports the experimental study of the three-dimensional characteristics of the mean velocity in the wake of a moderately loaded compressor rotor blade. The measurements were taken with a three-sensor hot-wire probe rotating with the rotor. The wake was surveyed at several radial and axial stations. The loading was found to have substantial effect and this was reflected not only in the axial and tangential components, but also in the radial component. The radial velocities were found to be high very near the trailing-edge and this exhibits the characteristics prevalent in a trailing vortex system. The static pressures across the wake were measured using a direction insensitive spherical head static-stagnation pressure probe. The static pressure was found to be higher inside the wake. These and other measurements are reported and correlated in this paper.

Copyright © 1980 by ASME
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