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Propeller Cavitation Modelling by CFD - Results from the VIRTUE 2008 Rome Workshop

AuthorsSalvatore, F., Streckwall, H., Terwisga, T.J.C. van
Conference/JournalFirst International Symposium on Marine Propulsors (smp’09), Trondheim, Norway
DateJun 22, 2009
Results from the Rome 2008 Workshop on cavitating propeller modelling are presented. Seven computational models by RANS, LES and BEM are benchmarked against a common test case addressing the INSEAN E779A propeller in uniform flow and in a wakefield. Submitted results provide a wide picture about capabilities of solvers based on different discretization techniques, turbulence and two-phase flow models. The comparative analysis of numerical results highlights a good agreement for the non-cavitating steady flow predictions, whereas for the cavitating flow, discrepancies in cavity extent are observed. In the case of a propeller operating in a non-uniform flow, difficulties to correctly model the inflow to the propeller are reflected in the differences in non-cavitating pressure distributions on the blade and hence in the transient cavity patterns.


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