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dc.contributor.authorSouza, Carlos Eduardo Silva de
dc.contributor.authorBachynski, Erin Elizabeth
dc.date.accessioned2019-11-21T13:36:03Z
dc.date.available2019-11-21T13:36:03Z
dc.date.created2019-05-17T13:27:01Z
dc.date.issued2019
dc.identifier.citationOcean Engineering. 2019, 180 223-237.nb_NO
dc.identifier.issn0029-8018
dc.identifier.urihttp://hdl.handle.net/11250/2629841
dc.description.abstractRecently published experimental results show variations in surge and pitch decay periods of floating wind turbines (FWTs) subjected to different incident wind velocities. This paper explores the external loads acting on a FWT, with special attention to nonlinearities which affect its low-frequency global motions. The period variations in surge and pitch are found to have different sources. In surge, the mooring system nonlinearities dominate, while for pitch the relative phase between the nacelle velocity and the thrust induced in the rotor leads to an “apparent inertia/damping” effect. Simplified 2-DOF models using linearized stiffness coefficients for surge and modified inertia and damping matrices for pitch are developed. Comparisons with state-of-the-art aero-hydro-servo-elastic time-domain simulations show excellent agreement for three distinct catenary-moored FWT designs.nb_NO
dc.language.isoengnb_NO
dc.publisherElseviernb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/deed.no*
dc.titleChanges in surge and pitch decay periods of floating wind turbines for varying wind speednb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber223-237nb_NO
dc.source.volume180nb_NO
dc.source.journalOcean Engineeringnb_NO
dc.identifier.doi10.1016/j.oceaneng.2019.02.075
dc.identifier.cristin1698481
dc.description.localcode© 2019. This is the authors’ accepted and refereed manuscript to the article. Locked until 12.4.2021 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/nb_NO
cristin.unitcode194,64,20,0
cristin.unitnameInstitutt for marin teknikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal