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Unsteady effects during resistance tests on a ship model in a towing tank

Doctors, Lawrence J. and Day, Alexander and Clelland, David (2008) Unsteady effects during resistance tests on a ship model in a towing tank. Journal of Ship Research, 52 (4). pp. 263-273. ISSN 0022-4502

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    Abstract

    It is known that there are oscillations in the wave resistance during the constantvelocity phase of a towing-tank resistance test on a ship model. In this work, the unsteady thin-ship resistance theory has been applied to this case. The results have been compared with experiment data obtained using a towing carriage the velocity history of which can be programmed. It is demonstrated here that generally excellent correlation exists between the theory and the experiments. In particular, one can predict the influence of Froude number, rate of acceleration, and type of smoothing of the acceleration on the characteristics of the oscillations. These characteristics include the amplitude, rate of decay, frequency, and phasing of the oscillations in the curve of wave resistance versus time.

    Item type: Article
    ID code: 13659
    Keywords: hydrodynamics, model testing, resistance, naval engineering, Naval architecture. Shipbuilding. Marine engineering, Civil and Structural Engineering, Mechanical Engineering, Ocean Engineering, Applied Mathematics, Numerical Analysis
    Subjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering
    Department: Faculty of Engineering > Naval Architecture and Marine Engineering
    Related URLs:
    Depositing user: Mrs Thelma Will
    Date Deposited: 21 Dec 2009 15:53
    Last modified: 05 Sep 2014 03:41
    URI: http://strathprints.strath.ac.uk/id/eprint/13659

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