Numerical Computation of Tip Vortex Flow Generated by a Marine Propeller

[+] Author and Article Information
Chao-Tsung Hsiao

Dynaflow, Inc., 7210 Pindell School Rd., Fulton, MD 20759

Laura L. Pauley

Mechanical Engineering Department, The Pennsylvania State University, University Park, PA 16802

J. Fluids Eng 121(3), 638-645 (Sep 01, 1999) (8 pages) doi:10.1115/1.2823517 History: Received July 14, 1998; Revised June 07, 1999; Online December 04, 2007


The uniform flow past a rotating marine propeller was studied using incompressible Reynolds-averaged Navier-Stokes computations with the Baldwin-Barth turbulence model. Extensive comparison with the experimental data was made to validate the numerical results. The general characteristics of the propeller flow were well predicted. The current numerical method, however, produced an overly diffusive and dissipative tip vortex core. Modification of the Baldwin-Barth model to better predict the Reynolds stress measurements also improved the prediction of the mean velocity field. A modified tip geometry was also tested to show that an appropriate cross section design can delay cavitation inception in the tip vortex without reducing the propeller performance.

Copyright © 1999 by The American Society of Mechanical Engineers
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