Study of Tip Vortex Cavitation Inception Using Navier-Stokes Computation and Bubble Dynamics Model

[+] Author and Article Information
Chao-Tsung Hsiao, Laura L. Pauley

Mechanical Engineering Department, The Pennsylvania State University, University Park, PA 16802-1412

J. Fluids Eng 121(1), 198-204 (Mar 01, 1999) (7 pages) doi:10.1115/1.2822002 History: Received May 05, 1997; Revised September 21, 1998; Online December 04, 2007


The Rayleigh-Plesset bubble dynamics equation coupled with the bubble motion equation developed by Johnson and Hsieh was applied to study the real flow effects on the prediction of cavitation inception in tip vortex flows. A three-dimensional steady-state tip vortex flow obtained from a Reynolds-Averaged Navier-Stokes computation was used as a prescribed flow field through which the bubble was passively convected. A “window of opportunity” through which a candidate bubble must pass in order to be drawn into the tip-vortex core and cavitate was determined for different initial bubble sizes. It was found that bubbles with larger initial size can be entrained into the tip-vortex core from a larger window size and also had a higher cavitation inception number.

Copyright © 1999 by The American Society of Mechanical Engineers
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