Research Papers

Optimum Design of Straight-Walled Diffusers

[+] Author and Article Information
S. J. Kline, D. E. Abbott, R. W. Fox

Department of Mechanical Engineering, Stanford University, Stanford, Calif.

J. Basic Eng 81(3), 321-329 (Sep 01, 1959) (9 pages) doi:10.1115/1.4008462 History: Received August 01, 1958; Published September 01, 1959; Online February 20, 2019


The four common optimum problems in diffuser design are defined. These optima are located in relation to the over-all flow regimes in terms of geometrical parameters for straight-walled units. Using an empirically derived transformation of variables between the conical and two-dimensional geometries, all available data for optimum recovery at constant ratio of wall length to throat width are correlated by a single straight line. This line lies slightly above and parallel to the line of onset of large transitory stall on the chart of over-all flow regimes. The correlated results are based on a literature survey. The range of conditions for each investigation is tabulated for convenient future reference.

Copyright © 1959 by ASME
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