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    Thruster-interaction Effects on a DP Shuttle Tanker - Wake Flow Measurements of the Main Propeller and Bow Tunnel Thrusters

    Authors
    Cozijn, J.L. and Hallmann, R.
    Date
    Jun 1, 2014

    This paper discusses thruster interaction effects for a DP shuttle tanker, equipped with two main propellers and rudders, as well as two bow tunnel thrusters. Thruster-interaction model tests were carried out in MARIN's Deepwater Towing Tank. Detailed PIV measurements were taken of the wake flow behind the main propellers and rudders. Furthermore, PIV measurements were taken of the wake flow of one of the two bow tunnel thrusters. The flow velocities were measured in a large number of cross sections at different down-stream positions. The PIV measurements provide a detailed image of the velocities in the thruster wake, showing axial velocities, as well as transverse and vertical velocity components.The results of the first set of measurements showed in detail the wake flow behind the main propeller of the DP shuttle tanker. The wake flow pattern was determined at rudder angles of 0 deg and 10 deg. Since the research is related to DP performance, bollard pull conditions (zero forward speed) were considered in the model tests.The results of the second set of measurements showed in detail the wake flow of one of the bow tunnel thrusters. The wake flow pattern was investigated in zero speed conditions, as well as for the vessel at forward speed. The observed flow patterns hel

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    Experts

    Hans Cozijn

    Senior Project Manager Autonomy & Decision Support | Performance at Sea

    TAGS

    Manoeuvring and Nautical Studies Sustainable Propulsion Measurements and Control Data Science Dynamic Positioning Manoeuvring Resistance and Propulsion Renewables Oil and Gas Infrastructure Marine Systems Life at Sea Powering Defence Passengers and Yachting Transport and Shipping Model Testing Research and Development offshore engineering research

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