Performance and Design of Straight, Two-Dimensional Diffusers

[+] Author and Article Information
L. R. Reneau

Lockheed Missiles and Space Co., Sunnyvale, Calif.

J. P. Johnston, S. J. Kline

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

J. Basic Eng 89(1), 141-150 (Mar 01, 1967) (10 pages) doi:10.1115/1.3609544 History: Received January 06, 1966; Online November 03, 2011


Performance data and flow characteristics for subsonic, two-dimensional, straight center line diffusers are presented. The four primary flow regimes which can occur are described and presented as functions of overall diffuser geometry. The performance of both stalled and unstalled diffusers is mapped for a wide range of geometries and inlet boundary layer thicknesses. An understanding of the relationships between flow regime and performance leads to a rational basis for diffuser design. The important maxima of performance and their location on the performance maps are presented. Both the range of data and correlations of optima of performance are extended beyond previous results.

Copyright © 1967 by ASME
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