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RESEARCH PAPERS

Tip Vortex Cavitation on an Oscillating Hydrofoil

[+] Author and Article Information
O. Boulon, J. P. Franc, J. M. Michel

Laboratoire des Ecoulements Géophysiques et Industriels, Institut de Mécanique de Grenoble, BP 53, 38041 Grenoble Cedex 9, France

J. Fluids Eng 119(4), 752-758 (Dec 01, 1997) (7 pages) doi:10.1115/1.2819494 History: Received July 05, 1995; Revised December 03, 1996; Online January 22, 2008

Abstract

This paper discusses tests conducted in the hydrodynamic tunnel of the University of Grenoble on a 3D oscillating hydrofoil. Visualization of unsteady tip vortex cavitation indicates a strong influence of the water nuclei content. The investigation was focused on the influence of the oscillation frequency on tip vortex cavitation inception. For very low nuclei content, cavitation inception is strongly delayed as compared to the steady-state results at very small oscillation frequencies. This delay is significantly reduced by nuclei seeding. The results can be explained by assuming that the time required for the inception of cavitation in the tip vortex corresponds to the time necessary for a cavitation nucleus to be captured by the vortex core.

Copyright © 1997 by The American Society of Mechanical Engineers
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