Extreme value predictions of marine structures like ships require appropriate hydrodynamic codes capable of modelling all relevant nonlinearities. For reliability assessments, these have to be embedded in computational procedures defining load scenarios. Disregarding important load effects or using simplistic procedures will result in over- or underestimated design loads, which eliminates the usefullness of directly assessed design loads. This paper discusses ways to embed time-domain field methods in extreme value predictions. Approaches are suggested that appear to give most reliable results. They rely on Monte-Carlo simulations, a reduction of parameter variations and extrapolation of exceedance rates over significant wave height. The computational effort is large, yet it can be handled with modern cluster computers.


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    Title :

    Application of CFD in long-term extreme value analyses of wave loads


    Contributors:

    Published in:

    Publication date :

    2012


    Size :

    19 Seiten, 10 Bilder, 2 Tabellen, 21 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Application of CFD in Long-Term Extreme Value Analyses of Wave Loads

    Oberhagemann, Jan / Shigunov, Vladimir / Moctar, Ould el | Taylor & Francis Verlag | 2012


    Long Term Estimation of Wave Loads Considering Ship Operation

    Ogawa, Y. / Ship Research Institute | British Library Conference Proceedings | 1994