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.
Application of CFD in long-term extreme value analyses of wave loads
Ship Technology Research / Schiffstechnik ; 59 , 3 ; 4-22
2012
19 Seiten, 10 Bilder, 2 Tabellen, 21 Quellen
Article (Journal)
English
Application of CFD in Long-Term Extreme Value Analyses of Wave Loads
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