Analysis of Subsonic Transitory Stalled Flows in Straight-Walled Diffusers

[+] Author and Article Information
W. Wysocki, Z. Kazimierski

Department of Mechanical Engineering, Technical University of Lodz, Poland

J. Fluids Eng 108(2), 222-226 (Jun 01, 1986) (5 pages) doi:10.1115/1.3242566 History: Received June 28, 1984; Online October 26, 2009


A simple, semi-empirical procedure is presented for computation of subsonic, turbulent, attached, and transitory-stalled flows in straight-walled diffusers with plenum exit. The procedure employs a zonal model while using the concept of a dividing streamline and integral methods for boundary layer calculations on diverging and parallel side walls. The dividing streamline separates the transitory stall zone, having zero mass flow rate, from the effective flow channel. The procedure predicts the pressure as a function of streamwise location with modest computation times, typically a few minutes on a personal computer and can be useful in design calculations.

Copyright © 1986 by ASME
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