Publikasjoner og ansvarsområder
Hydrodynamic modelling and estimating response of a glacial ice near a drilling rig
Application of Continuous Integration in Decision Support and Integrity Management Systems of Offshore Structures
On the Hydrodynamic Interaction between Ship and Free-surface Motions on Vessels with Moonpools
A two-dimensional numerical and experimental study of piston and sloshing resonance in moonpools with recess
The piston and first sloshing modes of two-dimensional moonpools with recess are investigated. Dedicated forced heave experiments are carried out. Different recess lengths are tested from 1/4 to 1/2 of the length of the moonpool at the mean waterline. A theoretical model to calculate...
Experimental and numberical study of roll damping on an FPSO with sponsons and bilge keels
A 2D Experimental and Numerical Study of Moonpools With Recess
Moonpool resonance is investigated in a two-dimensional setting in terms of regular, forced heave motions of a model with moonpool with different rectangular-shaped recess configurations. A recess is a reduced draft zone in the moonpool. Dedicated experiments were carried out. The model consisted of...
Investigating a Simplified Model for Moonpool Piston Mode Response in Irregular Waves
Estimating moonpool piston mode response at resonance is important for operation safety. This is a difficult task, in particular, due to nonlinear nature of the moonpool response connected to the damping imposed by the flow separation at the moonpool’s inlet. In the present work, the applicability o...
OCE2018 A-116 - Loads, design and operation of floaters in the Arctic - Ptil – NORD ST20
This report presents results from hydrodynamic analysis of interaction between glacial ice and semisubmersible drilling units, as part of the Petroleum Safety Authority's project "NORD ST20 Loads, design and operation of floaters in the northern area". The overall objective of the study has bee...
OMAE2017-62550 Simulation of Low Frequency Motions in Severe Seastates Accounting for Wave-Current Interaction Effects
Today’s industry practice assumes wave drift forces on floating structures can be computed from zero current wave drift force coefficients for the stationary floater, while simplified correction models introduce current effects and slow drift velocity effects. The paper presents an alternative appro...