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dc.contributor.authorGreco, Marilena
dc.contributor.authorLugni, Claudio
dc.contributor.authorFaltinsen, Odd Magnus
dc.date.accessioned2018-03-16T11:41:24Z
dc.date.available2018-03-16T11:41:24Z
dc.date.created2014-07-30T12:49:23Z
dc.date.issued2014
dc.identifier.isbn978-4-907621-00-1
dc.identifier.urihttp://hdl.handle.net/11250/2490843
dc.description.abstractThis work represents a further step of the physical study documented by Greco and Lugni (2012b) and Greco et al. (2014). Three-dimensional experiments have been performed on a FPSO model in regular waves to investigate the occurrence of parametric roll, the occurrence and features of water on deck and bottom slamming and the sensitivity of the mid-ship bending moment experienced by the vessel to the different operational conditions examined. The model tests provide also a certified database for the validation of the simplified Domain-Decomposition (DD) solver developed for the prediction of the ships behavior, in regular and long-crested irregular waves and with and without forward speed, documented in detail by Greco and Lugni (2012a). The DD couples a weak-scatterer potential-flow solver for the seakeeping problem with a shallow-water approximation for the water flow on the deck, when water shipping occurs, and with a Wagner-type impact solution, in case of bottom impact. The latter needs a proper criterion, this compound method combines the Ochi’s criterion based on the impact velocity with a pressure criterion proposed by Greco and Lugni (2012a) and validated in many incident-wave cases by Greco et al. (2012). In the previous steps, head-sea conditions, i.e. β = 180◦ , were investigated. Here the cases with β = 175◦ are considered with focus on parametric roll. The comparison between experimental and numerical wave-body interactions, and a subsequent in-depth analysis of the model tests, highlighted some important insights of parametric roll in connection with roll coupling with yaw. These aspects are examined in the following after a brief description of the model tests for the conditions and variables of interest.nb_NO
dc.language.isoengnb_NO
dc.publisherInternational Workshop on Water Waves and Floating Bodiesnb_NO
dc.relation.ispartofProceedings - 29th International Workshop on Water Waves and Floating Bodies
dc.titleRoll-yaw coupling effects on parametric resonance for a ship in regular wavesnb_NO
dc.typeChapternb_NO
dc.description.versionpublishedVersionnb_NO
dc.identifier.cristin1144754
dc.relation.projectNorges forskningsråd: 223254nb_NO
dc.description.localcodePublished by International Workshop on Water Waves and Floating Bodiesnb_NO
cristin.unitcode194,64,20,0
cristin.unitnameInstitutt for marin teknikk
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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