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dc.contributor.authorWang, Jungao
dc.contributor.authorFu, Shixiao
dc.contributor.authorLarsen, Carl Martin
dc.contributor.authorBaarholm, Rolf
dc.contributor.authorWu, Jie
dc.contributor.authorLie, Halvor
dc.identifier.citationOcean Engineering. 2017, 136 260-271.nb_NO
dc.description.abstractRecent research has confirmed a new type of vortex-induced vibration (VIV) in steel catenary risers (SCRs), purely caused by vessel motion. Vessel motion-induced VIV occurs because the SCR is exposed to the equivalent oscillating current due to its own motions relative to the still water. Preliminary results indicate that vessel motion-induced VIV is quite different from ocean current-induced VIV and is characterized with distinct timevarying features. In the present study, we aim at further summarizing the dominant parameters that govern the general vessel motion-induced VIV responses. Throughout the comparative studies on the instantaneous and statistical VIV responses including strain, displacement, response frequency, fatigue damage and top tension variation, the maximum Keulegan-Carpenter number KCmax and the maximum equivalent current velocity Vn_max are found to be the two dominant parameters that govern the vessel motion-induced VIV responses. Generally speaking, when KCmax is sufficiently large (larger than 39 according to the present study), the general vessel motion-induced VIV response is dominated by Vn max. However, when KCmax is small, the VIV response is less time-varying and shows strong correlation with both KCmax and the local KC number distribution along the SCR. Vessel motion-induced VIV response frequency models are also reviewed and discussed considering different KCmax and Vn max ranges. Hopefully, these results can provide some general guidelines for future vessel motion-induced VIV prediction and for industrial references.nb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.titleDominant parameters for vortex-induced vibration of a steel catenary riser under vessel motionnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalOcean Engineeringnb_NO
dc.description.localcode© 2017. This is the authors’ accepted and refereed manuscript to the article. LOCKED until 21.3.2019 due to copyright restrictions. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
cristin.unitnameInstitutt for marin teknikk

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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