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dc.contributor.authorOmmani, Babak
dc.contributor.authorBerthelsen, Petter Andreas
dc.contributor.authorLie, Halvor
dc.contributor.authorAksnes, Vegard Øgård
dc.contributor.authorLøland, Geir
dc.date.accessioned2020-01-13T08:35:50Z
dc.date.available2020-01-13T08:35:50Z
dc.date.created2020-01-08T14:18:50Z
dc.date.issued2019
dc.identifier.isbn978-0-7918-5887-5
dc.identifier.urihttp://hdl.handle.net/11250/2635836
dc.description.abstractImpact scenarios involving a typical drilling rig and glacial ice are studied. The goal is to better identify the important physical effects in modelling the dynamics of glacial ice in presence of waves and a floating platform, whilst improving simulation tools to capture the location and energy of possible collisions. A state-of-the-art numerical model of a typical semi-submersible is developed and calibrated with model tests to represent the drilling rig. A systematic incremental approach is adopted to model the dynamics of glacial ice. Long wave approximation, nonlinear excitation and restoring forces, interaction forces with the semi-submersible, and viscous forces due to flow separation are among the models which are considered step by step. The sensitivity of the resulted collision scenario to the modelling choices is investigated. The possibility of impact with columns, pontoons, and risers are particularly studied. Based on the obtained results, recommendations are made for modelling of glacial ice dynamics in presence of a floating platform.nb_NO
dc.language.isoengnb_NO
dc.publisherASMEnb_NO
dc.relation.ispartofASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2019): Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology
dc.titleHydrodynamic modelling and estimating response of a glacial ice near a drilling rignb_NO
dc.typeChapternb_NO
dc.description.versionpublishedVersionnb_NO
dc.identifier.doi10.1115/OMAE2019-95798
dc.identifier.cristin1768672
dc.description.localcode1 Copyright © 2019 ASMEnb_NO
cristin.unitcode194,64,20,0
cristin.unitnameInstitutt for marin teknikk
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


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