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Dynamic Positioning Thruster Near Wake Hydrodynamic Characteristics at Near Bollard Pull

journal contribution
posted on 2023-05-17, 00:45 authored by El Lababidy, S, Neil Bose, Liu, P, Walker, D
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.

History

Publication title

Journal of Ship Research

Volume

53

Pagination

48-58

ISSN

0022-4502

Department/School

Australian Maritime College

Publisher

Soc Naval Arch Marine Eng

Place of publication

601 Pavonia Avenue, Jersey City, USA, Nj, 07306

Rights statement

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

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in engineering