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RESEARCH PAPERS

The Erosive Axial Collapse of a Cavitating Vortex: An Experimental Study

[+] Author and Article Information
M. A. Dominguez-Cortazar

Centro University, Queretaro, Mexico

J. P. Franc, J. M. Michel

Laboratoire des Écoulements Géophysiques et Industriels, Institut de Mécanique de Grenoble, BP 53, 38041 Grenoble Cédex 9, France

J. Fluids Eng 119(3), 686-691 (Sep 01, 1997) (6 pages) doi:10.1115/1.2819299 History: Received November 28, 1995; Revised February 11, 1997; Online December 04, 2007

Abstract

The erosive efficiency of cavitating vortices is well known, although its exact mechanism has not been clarified. In order to bring fundamental information to the subject, a new device called “Cavermod” was designed in which axial collapse of a cavitating vortex is produced. We consider in this paper the design principles of the apparatus, the measurement equipment necessary for observing the phenomenon (collapse time of the order of a few milliseconds, axial collapse velocity varying between 70 and 700 m/s), and the main features of the flow. We also study the damage produced on erosion targets in order to correlate the vortex collapse with the erosion indentation features.

Copyright © 1997 by The American Society of Mechanical Engineers
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