Modelling of three dimensional sheet cavitation on marine propellers using a boundary element method
Author Vaz, G. and Bosschers J.
Title Modelling of three dimensional sheet cavitation on marine propellers using a boundary element method
Conference/Journal Sixth International Symposium on Cavitation CAV2006, Wageningen, The Netherlands
Month September
Year 2006

Abstract
The current paper presents the results of the research effort dedicated to the analysis of cavitating marine propellers using Boundary Element Methods. The results here shown were obtained with the code PROCAL being developed by MARIN as a fast analysis tool suited for design practice of marine propellers, and which permits the calculation of steady and unsteady cavitating flow around a propeller. The ultimate goal of the ongoing developments is the assessment of the hull pressure fluctuations resulting from an operating ship propeller. In the present paper, the theoretical and numerical formulation behind the models used are explained. Results are also presented on the verification and validation of the code for wetted flow situations. The results obtained for several propellers show that the models are correctly implemented, that the code models accurately both the steady (open-water) and unsteady (in-behind) flow on a propeller, and that it is a suitable base for implementation of a cavitating flow model. Finally results, for two propellers, both for steady and unsteady cavitating flow conditions, show that both the cavity extents and the cavity dynamics are captured by the current method.

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