Experimental analysis of the near wake from a ducted thruster at true and near bollard pull conditions using stereo particle image velocimetry (SPIV)

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DOIResolve DOI: http://doi.org/10.1115/1.1951770
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TypeArticle
Journal titleJournal of Offshore Mechanics and Arctic Engineering
Volume127
Issue3
Pages191196; # of pages: 6
AbstractThrusters working at low advance coefficients are employed in a wide range of offshore and marine applications on Floating, Production, Storage, and Offloading (FPSO) systems; shuttle tankers; tug boats; and mobile offshore units. Therefore, an understanding of the flow around the thrusters is of great practical interest. Despite this interest, there is lack of knowledge in the description of the hydrodynamic characteristics of a ducted thruster's wake at bollard pull and low advance coefficient values. This work was aimed at providing detailed data about the hydrodynamic characteristics of a Dynamic Positioning (DP) thruster near wake flow at different low advance coefficient values. Wake measurements were made during cavitation tunnel tests carried out on a ducted propeller model at the Italian Ship Model Basin (INSEAN), Rome, Italy. Through these experiments, the DP thruster near wake velocity components at different downstream axial planes, up to 1.5 diameters downstream, were obtained using a Stereoscopic Particle Image Velocimetry (SPIV) system. These experiments were carried out at different advance coefficient (J) values [bollard pull (J=0), J=0.4 and J=0.45].
Publication date
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedYes
IdentifierIR-2004-56
NRC number6133
NPARC number8896011
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Record identifier03fa7f16-a9ea-4161-a2a9-b5ac58277ec4
Record created2009-04-22
Record modified2016-05-09
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