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RESEARCH PAPERS

Reduction of End-Wall Effects in a Small, Low-Aspect-Ratio Turbine By Radial Work Redistribution

[+] Author and Article Information
J. C. Schiegel, H. C. Liu, W. F. Waterman

AiResearch Manufacturing Co. of Arizona, A Division of the Garrett Corp., Phoenix, Az.

J. Eng. Power 98(1), 130-136 (Jan 01, 1976) (7 pages) doi:10.1115/1.3446103 History: Received November 22, 1974; Online July 14, 2010

Abstract

Excessive stator end-wall and associated secondary flow losses were identified from test results of a small, low-aspect-ratio gas generator turbine. A research turbine was designed and tested for the same flow and work requirements to reduce the end-wall effects by varying radial work distribution. Loss predictions and mechanical design considerations for selecting a “parabolic” work distribution are discussed. Test results of this configuration are presented and compared with the baseline turbine and predicted stage performance.

Copyright © 1976 by ASME
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