A vortex-lattice method is applied to planing hull forms. The geometry of the jet surfaces next to the wetted hull is estimated on the basis of the hull geometry while its sidewise extent has been found numerically applying a non-linear free-surface pressure condition in the jet region. The method is applied to practical hull forms with chines spray rails and with varying deadrise over the length of the boat. The deadrise variation has a large influence on lift and drag. For a design situation, where the total lift and centre of effort is given, the influence on the total drag is less due to change of the trim. Calculated results and experiments for resistance and trim agree well for high velocities.


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    Title :

    Effects of Geometry on the Steady Performance of Planing Hulls



    Published in:

    Ship Technology Research ; 50 , 2 ; 91-100


    Publication date :

    2003-04-01


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Effects of Geometry on the Steady Performance of Planing Hulls

    Wagner, Mads Kert | Online Contents | 2003


    Supercritical Planing Hulls

    P. R. Payne | NTIS | 1974


    Seakeeping performance assessment of planing hulls

    Grigoropoulos, G. J. / Loukakis, T. A. / Wessex Institute of Technology| Technical University of Szczecin et al. | British Library Conference Proceedings | 1995


    Wedge Effect on Planing Hulls

    Chun-Tsung Wang | AIAA | 1980


    Naval architecture of planing hulls

    Lord, Lindsay | TIBKAT | 1946