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Interactions Between Thrusters Attached to a Vessel Hull

[+] Author Affiliations
L. Elkstrom, D. T. Brown

University College London, London, UK

Paper No. OMAE2002-28617, pp. 825-834; 10 pages
doi:10.1115/OMAE2002-28617
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3611-8 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

Many offshore vessels are equipped with rotating (azimuthing) thrusters for ease of manoeuvring and dynamic positioning. Accurate prediction of available thrust to resist horizontal environmental forces is important allowing the station-keeping capability of these vessels to be established. Additionally such thrusters are in many cases used, possibly in conjunction with tunnel thrusters and main propeller to provide propulsive power in transit. This paper presents results from a comprehensive experimental study to establish the influence on thruster performance of variations in current inflow velocity, thruster power, and thruster position relative to the hull. Furthermore the influence of two thrusters in close proximity, azimuthing so that flow into one thruster is influenced by the flow through the second thruster, is addressed. The experimental work was carried out using the wave tank and combined motion carriage facility in the Department of Mechanical Engineering at University College London.

Copyright © 2002 by ASME
Topics: Vessels , Hull

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