A Note on the Effect of Short and Long Laminar Separation Bubbles on Desinent Cavitation

[+] Author and Article Information
V. H. Arakeri

ARL; Indian Institute of Science, Bangalore, India

J. A. Carroll

ARL; McDonnell-Douglas, Long Beach, Calif.

J. W. Holl

Applied Research Laboratory (ARL) of the Pennsylvania State University, State College, Pa.

J. Fluids Eng 103(1), 28-32 (Mar 01, 1981) (5 pages) doi:10.1115/1.3240776 History: Received August 21, 1979; Online October 26, 2009


Earlier desinent cavitation studies on a 1/8 caliber ogive by one of the authors (J. W. H.) showed a sudden change in the magnitude of the desinent cavitation number at a critical velocity. In the present work it is shown by means of oil-film flow visualization that below the critical velocity a long laminar separation bubble exists whereas above the critical velocity the laminar separation bubble is short. Thus the desinent cavitation characteristics of a 1/8 caliber ogive are governed by the nature of the viscous flow around the body.

Copyright © 1981 by ASME
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