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A new methodology for estimating cavitation erosion: Application on a high speed cavitation test RIG

Koukouvinis, P., Bergeles, G. and Gavaises, M. (2014). A new methodology for estimating cavitation erosion: Application on a high speed cavitation test RIG. Paper presented at the 11th World Congress on Computational Mechanics (WCCM XI), 20-25 Jul 2014, Barcelona, Spain.

Abstract

In this work a new methodology for the prediction of flow areas of cavitation erosion is presented. The new methodology is a post processing procedure utilizing the results of the flow field solution; it is based on tracking the cavity boundaries in near-wall regions where the material derivative of the vapour volume fraction is reducing, meaning that in these areas the vapour structures are collapsing. Three cavitation erosion indexes are proposed and tested, by simulating the flow formed in a high-speed cavitation tunnel at Laboratoire des Ecoulements Géophysiques et Industriels (LEGI) of the University of Grenoble, where experimental erosion results have been obtained in the past. Agreement between the experimental data and the predictions is satisfactory, indicating the research road for developing an accurate prediction methodology of erosion and material loss.

Publication Type: Conference or Workshop Item (Paper)
Publisher Keywords: Cavitation, High-speed cavitation tunnel, Erosion modelling
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Departments: School of Mathematics, Computer Science & Engineering > Engineering
School of Mathematics, Computer Science & Engineering > Engineering > Mechanical Engineering & Aeronautics
Related URLs:
URI: http://openaccess.city.ac.uk/id/eprint/13587
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