Prediction of Oscillation Frequencies for Unstable Flow Past Cavities

[+] Author and Article Information
D. Rockwell

Institute of Hydromechanics, University of Karlsruhe, Karlsruhe, West Germany

J. Fluids Eng 99(2), 294-299 (Jun 01, 1977) (6 pages) doi:10.1115/1.3448746 History: Received August 11, 1976; Online October 12, 2010


The incompressible flow of a shear layer past a cavity can undergo relatively large amplitude organized transverse oscillations which arise from hydrodynamic instability. A model which enables prediction of the oscillation frequencies by accounting for streamwise variations in wave number and amplification factor is put forth. Predicted frequencies compare well with experimental data over a tenfold range of dimensionless cavity length.

Copyright © 1977 by ASME
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