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RESEARCH PAPERS

Improved Blade Profile Loss and Deviation Angle Models for Advanced Transonic Compressor Bladings: Part I—A Model for Subsonic Flow

[+] Author and Article Information
W. M. König, D. K. Hennecke

Department of Flight Propulsion, Technical University of Darmstadt, Darmstadt, Federal Republic of Germany

L. Fottner

Institute for Jet Propulsion, German Armed Forces University of Munich, Neubiberg, Federal Republic of Germany

J. Turbomach 118(1), 73-80 (Jan 01, 1996) (8 pages) doi:10.1115/1.2836609 History: Received March 02, 1994; Online January 29, 2008

Abstract

New blading concepts as used in modern transonic axial-flow compressors require improved loss and deviation angle correlations. The new model presented in this paper incorporates several elements and treats blade-row flows having subsonic and supersonic inlet conditions separately. In the first part of this paper two proved and well-established profile loss correlations for subsonic flows are extended to quasi-two-dimensional conditions and to custom-tailored blade designs. Instead of a deviation angle correlation, a simple method based on singularities is utilized. The comparison between the new model and a recently published model demonstrates the improved accuracy in prediction of cascade performance achieved by the new model.

Copyright © 1996 by The American Society of Mechanical Engineers
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