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Dynamic Positioning Thruster Near Wake Hydrodynamic Characteristics at Near Bollard Pull

Citation

El Lababidy, S and Bose, N and Liu, P and Walker, D, Dynamic Positioning Thruster Near Wake Hydrodynamic Characteristics at Near Bollard Pull, Journal of Ship Research, 53, (1) pp. 48-58. ISSN 0022-4502 (2009) [Refereed Article]


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Copyright Statement

Copyright Society of Naval Architects and Marine Engineers (SNAME) 2009

Abstract

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.

Item Details

Item Type:Refereed Article
Keywords:DYNAMIC POSITIONING (DP) THRUSTER; LASER DOPPLER VELOCIMETRY (LDV) MEASUREMENTS; WAKE HYDRODYNAMIC CHARACTERISTICS; VELOCITY DISTRIBUTION; PROPELLER WAKE MOMENTUM ESTIMATION; PROPELLER WAKE THRUST ESTIMATION
Research Division:Engineering
Research Group:Maritime Engineering
Research Field:Naval Architecture
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Bose, N (Professor Neil Bose)
ID Code:59345
Year Published:2009
Deposited By:NC Maritime Engineering and Hydrodynamics
Deposited On:2009-11-28
Last Modified:2010-07-22
Downloads:2 View Download Statistics

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