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RESEARCH PAPERS

Measurement of Gust Response on a Turbine Cascade

[+] Author and Article Information
A. P. Kurkov, B. L. Lucci

National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH 44135

J. Turbomach 119(2), 238-246 (Apr 01, 1997) (9 pages) doi:10.1115/1.2841106 History: Received February 13, 1995; Online January 29, 2008

Abstract

The paper presents benchmark experimental data on a gust response of an annular turbine cascade. The experiment was particularly designed to provide data for comparison with the results of a typical linearized gust-response analysis. Reduced frequency, Mach number, and incidence were varied independently. Except for the lowest reduced frequency, the gust velocity distribution was nearly sinusoidal. For the high-inlet-velocity series of tests, the cascade was near choking. The mean flow was documented by measuring blade surface pressures and the cascade exit flow. High-response pressure transducers were used to measure the unsteady pressure distribution. Inlet-velocity components and turbulence parameters were measured using hot wire. In addition to the synchronous time-averaged pressure spectra, typical power spectra are included for several representative conditions.

Copyright © 1997 by The American Society of Mechanical Engineers
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