Reynolds Number Effects in Axial Compressors

[+] Author and Article Information
A. B. Wassell

Rolls-Royce Limited, Derby, England

J. Eng. Power 90(2), 149-156 (Apr 01, 1968) (8 pages) doi:10.1115/1.3609154 History: Received August 01, 1967; Online August 25, 2011


The influence of variations in flow Reynolds number on the performance of axial compressors has been studied (changes in Reynolds number being, for the most part, achieved by changes in the inlet total pressure at or near the design speed). The measured results, so achieved, have been correlated to show how the main compressor performance parameters vary with Reynolds number. Reference has been made to cascade data to assist in choosing the form of the correlation, which is essentially empirical. A good correlation of the measured performance changes on component tests has been obtained. The method described, therefore, appears to be satisfactory for predicting trends for project assessments and avoids considering the detailed flow changes that occur within the machine as the Reynolds number is varied.

Copyright © 1968 by ASME
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