This paper considers the modelling of spray formation on planing hulls. The focus is on assessing the applicability of the prevailing theories and two-dimensional and three-dimensional Computational Fluid Dynamics (CFD) simulations in the investigation of different design factors for a novel spray deflection concept. The spray deflection concept is presented and its performance is evaluated by comparison with traditional spray rails. It is found that the prevailing theory where the spray field of a planing hull is represented by a two-dimensional flat planing plate will overestimate the spray thickness, whereas the theories that are based on wedge impact are correlating well with the results from the CFD simulations. Compared to a bare hull, adding spray deflectors reduces the viscous resistance by 28% for the studied cases. The spray deflectors further redirect the spray aftwards which reduce the total drag an additional 4%. The paper also discusses various aspects on CFD modelling of spray formation.


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    Titel :

    Numerical modelling of spray sheet deflection on planing hulls


    Beteiligte:
    Olin, Linus (Autor:in) / Altimira, Mireia (Autor:in) / Danielsson, Jonas (Autor:in) / Rosén, Anders (Autor:in)


    Erscheinungsdatum :

    2017-11-01


    Format / Umfang :

    7 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    Supercritical Planing Hulls

    P. R. Payne | NTIS | 1974


    Wedge Effect on Planing Hulls

    Chun-Tsung Wang | AIAA | 1980


    Effect of Spray Rails on the Resistance of Planing Hulls

    Grigoropoulos, G. J. / Loukakis, T. A. | British Library Conference Proceedings | 1995


    Naval architecture of planing hulls

    Lord, Lindsay | TIBKAT | 1946