Accurate modeling of energy dissipation mechanisms due to wave breaking in the frequency domain is an overdue task hampered by the facts that wave breaking is highly localized in time. On the other hand, a spatially localized eddy viscosity formulation based on the mixing length hypothesis is capable of providing accurate predictions of wave skewness and asymmetry in the surf zone. In this study, the structure of dissipation term is re-examined using the data of Krauset al. (1992) and Buhr Hansen and Svendsen (1979) from the viewpoint of time dependent Boussinesq equations. Based on these results, the structure of frequency domain dissipation model over the surf zone is deduced. It turns out that dissipation due to wave breaking should be biased strongly toward higher frequencies in spectral calculations, and that a quadratic dependence on frequency within the dissipation coefficient comes closest to matching the desired structure of the breaking term. The prediction of skewness by numerical model with twenty harmonics involved is promising whereas the asymmetry in the surf zone is somewhat under-predicted.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Forecasting of higher order spectral quantities of nonlinear random waves over surf zone


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Cho, Young Jun (Autor:in) / Lee, Jae Il (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.05.2003


    Format / Umfang :

    9 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Conserved Quantities in Higher-Order Nonlinear Schrodinger Equations

    IEEE | British Library Conference Proceedings | 1999


    Conserved quantities in higher-order nonlinear Schrodinger equations

    Jongbae Kim / Q-Han Park / Shin, H.J. | IEEE | 1999


    Transfer and Dissipation of Wave Energy under Surf-Zone Breaking Waves

    Hwung, Hwung-Hweng / Huang, Zhi-Cheng | HENRY – Bundesanstalt für Wasserbau (BAW) | 2008

    Freier Zugriff

    Wave Breaking, Surface Motion, Surf Zone, Air-Sea Interaction and Wind Waves

    Grue, J. ;Liu, P. L.-F. ;Pedersen, G. K. | British Library Online Contents | 2004


    Wave Breaking, Surface Motion, Surf Zone, Air-Sea Interaction and Wind Waves

    Grue, J. ;Liu, P. L.-F. ;Pedersen, G. K. | British Library Online Contents | 2004