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RESEARCH PAPERS

The Effect of Blade-Wakes on the Performance of Short Dump-Diffuser Type Combustor Inlets

[+] Author and Article Information
A. Klein, P. Pucher, M. Rohiffs

Motoren- und Turbinen-Union München GmbH, POB 50 06 40, 8000 München 50, W. Germany

J. Fluids Eng 102(2), 236-241 (Jun 01, 1980) (6 pages) doi:10.1115/1.3240657 History: Received November 11, 1978; Online October 26, 2009

Abstract

Experimental results are presented of the effects of flow distortions, generated by a compressor cascade, on the performance of a short annular dump-diffuser type combustor inlet. The distance between the cascade and the diffuser entrance plane was varied. The losses increase substantially when this distance becomes small. In most of the tests the losses turned out to be minimum at a distance of about two blade-chord lengths. When the cascade was removed, the losses were higher than this minimum value. Evidence is presented that the radial blockage factor rather than the total blockage factor determines the magnitude of the losses.

Copyright © 1980 by ASME
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