dc.contributor.author | Greco, Marilena | |
dc.contributor.author | Lugni, Claudio | |
dc.contributor.author | Faltinsen, Odd Magnus | |
dc.date.accessioned | 2018-03-16T11:41:24Z | |
dc.date.available | 2018-03-16T11:41:24Z | |
dc.date.created | 2014-07-30T12:49:23Z | |
dc.date.issued | 2014 | |
dc.identifier.isbn | 978-4-907621-00-1 | |
dc.identifier.uri | http://hdl.handle.net/11250/2490843 | |
dc.description.abstract | This 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.iso | eng | nb_NO |
dc.publisher | International Workshop on Water Waves and Floating Bodies | nb_NO |
dc.relation.ispartof | Proceedings - 29th International Workshop on Water Waves and Floating Bodies | |
dc.title | Roll-yaw coupling effects on parametric resonance for a ship in regular waves | nb_NO |
dc.type | Chapter | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.identifier.cristin | 1144754 | |
dc.relation.project | Norges forskningsråd: 223254 | nb_NO |
dc.description.localcode | Published by International Workshop on Water Waves and Floating Bodies | nb_NO |
cristin.unitcode | 194,64,20,0 | |
cristin.unitname | Institutt for marin teknikk | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |