Equilibrium of Ventilated Cavities in Tip Vortices

[+] Author and Article Information
F. Castro

Departamento de Ingeniería Energética y Fluidomecánica, Universidad de Valladolid, 47011 Valladolid, Spain

A. Crespo, F. Manuel

Departamento de Ingeniería Energética y Fluidomecánica, E.T.S.I.I., Universidad Politécnica de Madrid, 28006 Madrid, Spain

D. H. Fruman

Groupe Phénomènes d’Interface, ENSTA, Palaiseau, 91120 France

J. Fluids Eng 119(4), 759-767 (Dec 01, 1997) (9 pages) doi:10.1115/1.2819495 History: Received May 22, 1995; Revised June 03, 1997; Online January 22, 2008


The behavior of air cavities formed in the tip vortex trailing from rectangular and elliptical planform hydrofoils has been examined both theoretically and experimentally. These cavities have some peculiarities, in particular their ability to move upstream and reach a stable position near the hydrofoil. Detailed measurements of the velocity components and the cavity characteristics have been made. The results are compared with the predictions of a theoretical model based on the equilibrium balance of a cavity developing in a Lamb vortex.

Copyright © 1997 by The American Society of Mechanical Engineers
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