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International Journal of Rotating Machinery
Volume 2012, Article ID 348939, 22 pages
http://dx.doi.org/10.1155/2012/348939
Research Article

EFD and CFD Characterization of a CLT Propeller

1Department of Naval Architecture, Marine Engineering and Electrical Engineering (DINAEL), Genoa University, 16126 Genoa, Italy
2Department of Mechanical Engineering (DIME), Genoa University, 16126 Genoa, Italy

Received 2 February 2012; Accepted 10 May 2012

Academic Editor: Francesco Salvatore

Copyright © 2012 Daniele Bertetta 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

In the present paper an experimental and numerical analysis of an unconventional CLT propeller is carried out. Two different numerical approaches, a potential panel method and an RANSE solver, are employed. Cavitation tunnel experiments are carried out in order to measure, as usual, thrust, torque, and cavity extension for different propeller working points. Moreover, LDV measurements are performed to have a deep insight into the complex wake behind the propeller and to analyze the dynamics of generated tip vortexes. The numerical/experimental analysis and comparison of results highlight the peculiarities of this kind of propellers, the possibility to increase efficiency and reduce cavitation risk, in order to exploit the design approaches already well proven for conventional propellers also in the case of these unconventional geometries.