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Lookup NU author(s): Professor Pengfei LiuORCiD
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The knowledge of the hydrodynamic characteristics and momentum effects of the flow of dynamic positioning (DP) thrusters are important factors in the design of structures around the DP thrusters and in improving DP system reliability. In the present study, the flow field around a DP thruster model was precisely measured in a cavitation tunnel using a two-component laser Doppler velocimetry (LDV) system. These experiments were carried out with and without a nozzle at three different axial planes up to 1.5 diameters downstream, and the results are presented here for a pitch/diameter ratio of 1.2 at near bollard pull operating conditions (J = 0.4 and J = 0.45). This paper shows and compares the results of the DP thruster near wake hydrodynamic and momentum characteristics when operating with and without a nozzle at two different low advance coefficient values.
Author(s): El Lababidy SA, Bose N, Liu P, Walker D
Publication type: Article
Publication status: Published
Journal: Journal of Ship Research
Print publication date: 01/03/2009
ISSN (print): 0022-4502
ISSN (electronic): 1542-0604
Publisher: Society of Naval Architects and Marine Engineers