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A generic method to model frequency-direction wave spectra for FPSO motions

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Publication date2008
Host publicationASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering
Number of pages11
ISBN (Electronic)0791838218
ISBN (Print)9780791848180
<mark>Original language</mark>English


We report a new approach to model the frequency-direction spectrum, in which the frequency-direction spectra from measurements or hindcast studies are fitted simultaneously in two dimensions, frequency and direction. Depending on the amount of wind forcing on the partition, either a unimodal (swell) or bimodal (wind-sea) wave spreading function is adopted together with the spectral form which best fits the frequency spectrum. This paper describes the new method and presents the results on a measured dataset. Copyright © 2008 by ASME.