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Cavitation Erosion Prediction From Inferred Forces Using Material Resistance Data

Escaler, Xavier and Avellan, François and Egusquiza, Eduard (2001) Cavitation Erosion Prediction From Inferred Forces Using Material Resistance Data. 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 (Unpublished) http://resolver.caltech.edu/CAV2001:sessionA3.005

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Abstract

To improve cavitation erosion prediction based on induced vibrations, some experimental work has been carried out on two different materials, a stainless steel and a protective coating. First, the erosive characteristics of the materials have been analyzed in a cavitating vortex generator. Pit counting results have been correlated to inferred force intensities occurring on the eroded area from measured vibrations considering the transmissibility from the excitation location to the measuring position. The relationship between the pit area and the force intensity has been calculated. To validate these results, the same materials have been tested in a hydrodynamic tunnel where the force intensities have been inferred in the same way. Then, the eroded area has been calculated using the erosion characteristics previously determined. The results obtained compare well with with the actual erosion measured on the tunnel specimens. Next step is to apply this method to hydraulic machines.


Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:cavitation erosion prediction
Record Number:CAV2001:sessionA3.005
Persistent URL:http://resolver.caltech.edu/CAV2001:sessionA3.005
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:79
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:02 May 2001
Last Modified:26 Dec 2012 07:09

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