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

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)...

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Bibliographic Details
Published in:Volume 1: Offshore Technology
Main Authors: Van Zutphen, H.J., Jonathan, P., Ewans, K.C.
Format: Text
Language:unknown
Published: ASME 2008
Subjects:
Arctic
Online Access:https://eprints.lancs.ac.uk/id/eprint/133094/
https://doi.org/10.1115/OMAE2008-57481
Description
Summary: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.

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