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dc.contributor.authorXu, Kun
dc.contributor.authorMin, Zhang
dc.contributor.authorShao, Yanlin
dc.contributor.authorGao, Zhen
dc.contributor.authorMoan, Torgeir
dc.date.accessioned2019-08-29T11:34:34Z
dc.date.available2019-08-29T11:34:34Z
dc.date.created2019-08-28T08:57:19Z
dc.date.issued2019
dc.identifier.citationApplied Ocean Research. 2019, 91nb_NO
dc.identifier.issn0141-1187
dc.identifier.urihttp://hdl.handle.net/11250/2611617
dc.description.abstractFloating wind turbine has been the highlight in offshore wind industry lately. There has been great effort on developing highly sophisticated numerical model to better understand its hydrodynamic behaviour. A engineering-practical method to study the nonlinear wave effects on floating wind turbine has been recently developed. Based on the method established, the focus of this paper is to quantify the wave nonlinearity effect due to nonlinear wave kinematics by comparing the structural responses of floating wind turbine when exposed to irregular linear Airy wave and fully nonlinear wave. Critical responses and fatigue damage are studied in operational conditions and short-term extreme values are predicted in extreme conditions respectively. In the operational condition, wind effects are dominating the mean value and standard deviation of most responses except floater heave motion. The fatigue damage at the tower base is dominated by wind effects. The fatigue damage for the mooring line is more influenced by wind effects for conditions with small wave and wave effects for conditions with large wave. The wave nonlinearity effect becomes significant for surge and mooring line tension for large waves while floater heave, pitch motion, tower base bending moment and pontoon axial force are less sensitive to the nonlinear wave effect. In the extreme condition, linear wave theory underestimates wave elevation, floater surge motion and mooring line tension compared with fully nonlinear wave theory while quite close results are predicted for other responses.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.titleEffect of wave nonlinearity on fatigue damage and extreme responses of a semi-submersible floating wind turbinenb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.volume91nb_NO
dc.source.journalApplied Ocean Researchnb_NO
dc.identifier.doihttps://doi.org/10.1016/j.apor.2019.101879
dc.identifier.cristin1719332
dc.description.localcode© 2019 The Authors. Published by Elsevier Ltd. Open Access CC-BY-NC-NDnb_NO
cristin.unitcode194,64,20,0
cristin.unitnameInstitutt for marin teknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
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