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Experimental analysis and evaluation...

El-Lababidy, Said.

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Experimental analysis and evaluation of a dynamic positioning thruster in heavy loading conditions.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Experimental analysis and evaluation of a dynamic positioning thruster in heavy loading conditions./
Author:	El-Lababidy, Said.
Description:	158 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-09, Section: B, page: 5026.
Contained By:	Dissertation Abstracts International66-09B.
Subject:	Engineering, Marine and Ocean. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR06679
ISBN:	0494066792

Experimental analysis and evaluation of a dynamic positioning thruster in heavy loading conditions.
El-Lababidy, Said.

Experimental analysis and evaluation of a dynamic positioning thruster in heavy loading conditions. - 158 p.

Source: Dissertation Abstracts International, Volume: 66-09, Section: B, page: 5026.

Thesis (Ph.D.)--Memorial University of Newfoundland (Canada), 2005.

Over the past few years, Dynamic Positioning (DP) systems have seen increasing use in the offshore oil and gas industry. As operations move into more hostile and deeper waters, the need for DP systems has become almost mandatory. Thrusters working at low advance ratios 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 a DP thruster is of great practical interest.

ISBN: 0494066792Subjects--Topical Terms:

1019064
Engineering, Marine and Ocean.

Experimental analysis and evaluation of a dynamic positioning thruster in heavy loading conditions.
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020 $a 0494066792
035 $a (UnM)AAINR06679
035 $a AAINR06679
040 $a UnM $c UnM
100 1 $a El-Lababidy, Said. $3 1905156
245 1 0 $a Experimental analysis and evaluation of a dynamic positioning thruster in heavy loading conditions.
300 $a 158 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-09, Section: B, page: 5026.
502 $a Thesis (Ph.D.)--Memorial University of Newfoundland (Canada), 2005.
520 $a Over the past few years, Dynamic Positioning (DP) systems have seen increasing use in the offshore oil and gas industry. As operations move into more hostile and deeper waters, the need for DP systems has become almost mandatory. Thrusters working at low advance ratios 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 a DP thruster is of great practical interest.
520 $a Despite this interest, there is lack of knowledge on the description of the hydrodynamic characteristics of a DP thruster's wake under varied operating conditions and regarding a description of the effects of the current wash produced from DP thrusters when they are in operation. The large number of parameters involved in these particular problems does not allow an experimental and systematic coverage of the various phenomena of the DP thruster's wake. Therefore instead, recourse must be taken to a combination of experiments and calculations, which together eventually will yield a prediction tool that can be used to further improve the analysis of a DP thrusters wake. With the increasing importance and applications of DP thrusters in the offshore oil and gas industry, the designer as well as the operator must have more information about the operational propulsive characteristics. Future development and the success in such approaches depend greatly upon our understanding of the flow around a DP thruster.
520 $a Different phenomena associated with the propeller wake can be measured by the introduction of laser techniques: Laser Doppler Velocimetry (LDV) and Particle Imagine Velocimetry (PIV), as propeller flow velocity-measuring tools. Moreover, with Computational Fluid Dynamics (CFD) codes finding their way into practical applications, a combined analysis is gradually becoming feasible. Experiments are then used to validate and complement computations.
520 $a The aim of this study is to provide a comprehensive and systematic analysis of the flow produced from the operation of a DP thruster with and without a nozzle, under varied operating conditions. Furthermore, this study aims to quantify the interaction effects between the DP thruster wake and any structures placed in the working region of the DP thruster up to 15 diameters. This study is the first such approach to the particular problems associated with DP thruster operation.
520 $a In this research, a DP thruster's performance characteristics and wake velocities were analyzed experimentally, and the DP thruster near and far wake profile was simulated computationally. (Abstract shortened by UMI.)
590 $a School code: 0306.
650 4 $a Engineering, Marine and Ocean. $3 1019064
690 $a 0547
710 2 0 $a Memorial University of Newfoundland (Canada). $3 1017906
773 0 $t Dissertation Abstracts International $g 66-09B.
790 $a 0306
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NR06679