The Boundary Element Method (BEM), is usually the most efficient computational technique for potential flows. However, BEMs are not capable of modelling all free-surface flow phenomena, especially not most types of breaking waves. The Reynolds-averaged Navier-Stokes (RANS) equations are usually applied to model complex phenomena. However, often RANS solvers with considerable effort are used in cases where just a complex free surface needs to be modelled. In these cases, a potential flow solver may provide faster response. In addition, certain numerical techniques can be checked faster within a potential flow solver, before moving to more complex RANS solvers. A potential flow solver based on the Finite Volume method (FVM) solves free surface problems. The solution procedure incorporates the implicit time integration scheme both for the bulk flow and for the free-surface boundary. Special care has been taken for the determination of cell fluxes, so that the computations can be carried out properly also in curvilinear coordinate systems. The method is validated with a transom-stern model (ILE model) using three different Froude numbers. The wave heights correspond reasonable well to the results obtained using other potential flow solvers.


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    Titel :

    A potential flow solver for nonlinear free surface problems based on the finite volume method


    Weitere Titelangaben:

    Berechnung der nichtlinearen Potenzialströmung an der freien Wasseroberfläche mit dem Finite-Volumen-Verfahren


    Beteiligte:
    Martio, Jussi (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2006


    Format / Umfang :

    8 Seiten, 8 Bilder, 9 Quellen



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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