Performance Evaluation of Centrifugal Compressor Impellers Using Three-Dimensional Viscous Flow Calculations

[+] Author and Article Information
J. Moore, J. G. Moore

Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Va. 24061

P. H. Timmis

Rolls-Royce Ltd., Aero Division, Leavesden, Watford, England

J. Eng. Gas Turbines Power 106(2), 475-481 (Apr 01, 1984) (7 pages) doi:10.1115/1.3239590 History: Received December 21, 1982; Online October 15, 2009


Calculations of three-dimensional viscous flow in the impeller of a centrifugal compressor are used as the basis of a study of the thermodynamics of the compression process. Flow in a high hub-tip ratio low specific speed impeller of approximately 3.4:1 pressure ratio is considered. Results are presented showing the work and loss production processes in the impeller. A strong influence of tip-leakage flow on the performance of this unshrouded wheel is found.

Copyright © 1984 by ASME
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