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An Improved Boundary Element Analysis of Cavitating Three-Dimensional Hydrofoils

Salvatore, Francesco and Esposito, Pier Giorgio (2001) An Improved Boundary Element Analysis of Cavitating Three-Dimensional Hydrofoils. 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 (Unpublished) http://resolver.caltech.edu/CAV2001:sessionB1.006

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Abstract

A theoretical analysis of three--dimensional cavitating flows based on a boundary element approach which includes rotational and viscous flow effects is presented. Partial sheet cavitation is studied by a closed--cavity nonlinear model which includes the prediction of the cavity detachment point. The trailing vorticity path is described by a wake--alignment technique. Viscosity effects are included via a viscous/inviscid technique based on boundary--layer assumptions. Cavitation modelling, wake alignment and viscous--flow correction are integrated into the potential--flow solution by BEM through a coupling procedure. Comparisons of present numerical results with experiments and numerical results in the literature show the capability of the proposed methodology to take into account viscosity effects on attached cavitation, and to analyze the flowfield in the tip--vortex region.


Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:theoretical hydrodynamics, cavitation, boundary element methods, inviscid flows, boundary layer flows viscous/inviscid coupling. hydrofoils.
Record Number:CAV2001:sessionB1.006
Persistent URL:http://resolver.caltech.edu/CAV2001:sessionB1.006
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:84
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:04 May 2001
Last Modified:26 Dec 2012 07:09

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