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RESEARCH PAPERS

Some Experiments at Low Speed on Compressor Cascades

[+] Author and Article Information
D. Pollard

Mechanical Engineering Laboratories, English Electric Company Ltd., Whetstone, Leicester, England

J. P. Gostelow

Compressor Aerodynamic Development Unit, General Electric Company, Cincinnati, Ohio

J. Eng. Power 89(3), 427-436 (Jul 01, 1967) (10 pages) doi:10.1115/1.3616709 History: Received August 04, 1966; Online August 25, 2011

Abstract

Some results of recent work on low-speed cascade tunnels are described. Preliminary investigations, directed toward the analysis and improvement of the airflow and testing techniques, revealed that, when porous sidewall suction was employed, almost all change in axial velocity occurred within the blade row. Variation of axial velocity ratio, aspect ratio, Reynolds number, and turbulence level for one particular cascade facilitated an explanation of differences between the results of early British and American cascade tests. More recently, work has involved cascade tests on an analytically derived cascade. Good agreement was obtained between theoretical and experimental pressure distributions and profile boundary layers.

Copyright © 1967 by ASME
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