Hydrodynamic forces on a horizontal cylinder resting on a sand bed under waves and currents

Peter Stansby, Paul Starr

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Experiments have been made in a laboratory flume to investigate the interaction of a mobile sand bed with a cylinder under currents and waves. The cylinder is free to move vertically under its own weight. Some general conclusions may be drawn from the results although some details could not be reproduced from one run to another with the same input conditions. The cylinder always caused incipient bed motion and ripple formation to occur at lower Shields numbers. The cylinder axis always dropped and forces were always reduced, sometimes substantially, as a result of bed motion. Hydrodynamic force was measured through the surface pressures by a novel device.
    Original languageEnglish
    Title of host publicationProceedings of the First International Offshore and Polar Engineering Conference|Proc First Int Offshore Polar Eng Conf
    EditorsJin S. Chung, Birger J. Natvig, Kenji Kaneko, Augustin J. Ferrante
    Place of PublicationGolden, CO, United States
    PublisherInternational Society of Offshore and Polar Engineers
    Pages158-163
    Number of pages5
    ISBN (Print)0962610488
    Publication statusPublished - 1991
    EventProceedings of the First International Offshore and Polar Engineering Conference - Edinburgh, Scotl
    Duration: 1 Jul 1991 → …

    Conference

    ConferenceProceedings of the First International Offshore and Polar Engineering Conference
    CityEdinburgh, Scotl
    Period1/07/91 → …

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