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International Journal of Rotating Machinery
Volume 2012 (2012), Article ID 716392, 13 pages
http://dx.doi.org/10.1155/2012/716392
Research Article

Modeling of Cavitating Flow through Waterjet Propulsors

Applied Research Laboratory, The Pennsylvania State University, State College, PA 16804-0030, USA

Received 5 February 2012; Accepted 12 May 2012

Academic Editor: Yin Lu (Julie) Young

Copyright © 2012 Jules W. Lindau et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A computational-fluid-dynamics-based modeling effort to capture flow through an axial flow waterjet propulsor is presented. The effort covered the waterjet flow over a wide range of flow coefficients and into cavitation-driven breakdown. The computations are presented in cavitation at two values of flow coefficient through a series of decreasing operating inlet total pressure. The computational results are compared to experimental measurements. Suction-surface and tip-gap cavitation patterns are presented and compared to experimental photographs. Presented computational solutions are blade-passage steady and periodic. The computational results apply a powering iteration methodology to facilitate coupling of rotor, stator, and inflow and outflow ducting.