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Application of Preconditioned, Multiple-Species, Navier-Stokes Models to Cavitating Flows

Lindau, Jules W. and Kunz, Robert F. and Venkateswaran, Sankaran and Boger, David A. (2001) Application of Preconditioned, Multiple-Species, Navier-Stokes Models to Cavitating Flows. 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 (Unpublished) http://resolver.caltech.edu/CAV2001:sessionB4.005

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Abstract

A preconditioned, homogenous, multiphase, Reynolds Averaged Navier-Stokes model with mass transfer is presented. Liquid, vapor, and noncondensable gas phases are included. The model is preconditioned in order to obtain good convergence and accuracy regardless of phasic density ratio or flow velocity. Both incompressible and finite-acoustic-speed models are presented. Engineering relevant validative and demonstrative unsteady and transient two and three-dimensional results are given. Transients due to unsteady cavitating flow including shock waves are captured. In modeling axisymmetric cavitators at zero angle-of-attack with 3-D unsteady RANS, significant asymmetric flow features are obtained. In comparison with axisymmetric unsteady RANS, capture of these features leads to improved agreement with experimental data. Conditions when such modeling is not necessary are also demonstrated and identified.


Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:cavitation, multiphase computational fluid dynamics, unsteady reynolds-averaged navier-stokes
Record Number:CAV2001:sessionB4.005
Persistent URL:http://resolver.caltech.edu/CAV2001:sessionB4.005
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:98
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:14 May 2001
Last Modified:26 Dec 2012 07:09

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