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An Experimental Investigation of Partial Cavitation on a Two - Dimensional Hydrofoil

Astolfi, Jacques Andre (2001) An Experimental Investigation of Partial Cavitation on a Two - Dimensional Hydrofoil. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA. (Unpublished) http://resolver.caltech.edu/CAV2001:sessionB1.002

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Abstract

An investigation of leading edge partial cavitation was performed including the cavitation inception conditions, the cavitation patterns together with cavity length measurements. The investigation was enhanced by wall-pressure measurements using an instrumented hydrofoil equipped with seventeen wall-pressure transducers. Several experimental results are presented in the paper. A peak of pressure fluctuations was recorded at the cavity closure. The peak magnitude was seen to increase with the cavity length. For cavity lengths that did not exceed about half the foil chord, the peak originated from pressure fluctuations at a Strouhal number based on the cavity length close to 0.2. For longer cavities, the cavity began to pulsate at a lower frequency with the cavity length varying from the vicinity of the leading edge up to the trailing edge. The reason for such a phenomena is discussed.


Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:cavitation, hydrodynamics, hydrofoil, experiments wall-pressure measurements, unsteady flow
Record Number:CAV2001:sessionB1.002
Persistent URL:http://resolver.caltech.edu/CAV2001:sessionB1.002
Usage Policy:The papers of this symposium proceedings are protected by copyright, retained by the authors. Authors control translation and reproduction rights to these works. However, readers are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. This permission is in addition to rights of reproduction granted under Section 107, 108, and other provisions of the U.S. Copyright Act.
ID Code:37
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:09 Apr 2001
Last Modified:26 Dec 2012 07:09

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