Separation Prediction for Conical Diffusers

[+] Author and Article Information
James M. Robertson

University of Illinois, Urbana, Ill.

Harvey R. Fraser

USA, U. S. Military Academy, West Point, N. Y.

J. Basic Eng 82(1), 201-207 (Mar 01, 1960) (7 pages) doi:10.1115/1.3662524 History: Received January 02, 1959; Online November 04, 2011


A method of incompressible turbulent boundary-layer analysis based on the D parameter introduced by D. Ross is applied to conical-diffuser flow. The separation conditions are shown to depend on the initial momentum-thickness Reynolds number and a distance parameter involving the initial momentum thickness, the initial radius, and the diffuser length. Comparison with experimental information on diffuser separation indicates that the predictions are reliable, but conservative.

Copyright © 1960 by ASME
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