Analysis of the 3D zone of flow establishment from a ship’s propeller

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    In the present study an experimental investigation of the time-averaged velocity and turbulence intensity distributions from a ship’s propeller, in “bollard pull” condition (zero speed of advance), is reported. Previous studies have focused mainly on the velocity profile of not a rotating ship propeller but a plain jet. The velocity profile of a propeller is investigated experimentally in this study.
    The velocity measurements were performed in laboratory by using a Laser Doppler Anemometry (LDA). The measurements demonstrated two-peaked ridges velocity profile with a low velocity core at the centre within the near wake. The two-peaked ridges combined to be one-peaked ridge at 3.68 diameters downstream indicating the end of the zone of flow establishment. The study
    provides useful information from a rotating ship’s propeller rather than a simplified plain jet to researchers investigating flow velocity generated from a propeller and probably resulting local scouring.
    Original languageEnglish
    Number of pages12
    Pages (from-to)465-477
    JournalKSCE Journal of Civil Engineering
    Journal publication dateMay 2012
    Issue number4
    Volume16
    DOIs
    Publication statusPublished - May 2012

    ID: 1650022