Browsing Institutt for marin teknikk by Title
Now showing items 3394-3410 of 3410
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Weather Routing of Supply Vessels in the North Sea - Solving the Supply Vessel Weather Routing Problem
(Master thesis, 2015)This thesis is concerned with defining and solving the supply vessel weather routing problem. The particular problem in focus will be Statoil's supply circuit in the middle North Sea, including the Johan Sverdrup oil field. ... -
Weight Margins and Flexibility in Offshore Rigs
(Master thesis, 2013)The subject of this paper is the use of weight margins in the design and fabrication of large offshore oilrigs. Margins are a way of increasing the freedom of choice of the designers and a method of increasing the overall ... -
Wellhead platform subjected to accidental loads
(Master thesis, 2016)Cost reduction in the oil and gas industry forces new and innovative solutions. Unmanned wellhead platforms are alternative solutions for developing small fields which would normally be developed with subsea wellheads. For ... -
Wind and soil model influences on the uncertainty in fatigue of monopile supported wind turbines
(Peer reviewed; Journal article, 2022)Several alternative engineering models are available for the use in analysis of offshore wind turbines. However, it is not always clear which of the models will yield the most accurate or sufficiently conservative results. ... -
Wind load on feed barge
(Master thesis, 2022)Fish is a kind of sustainable food for healthy diet, and it plays an important role in fulfilling human's future needs for healthy food. Norway is the world's largest fish exporter, and nearly half of the Norwegian fish ... -
Wind power plant grid-forming control and influences on the power train and power system oscillation
(Chapter, 2022)In future power systems, wind power plants are supposed to contribute in the voltage and frequency stability of the grid. For this purpose, the control strategy of the wind power-frequency converter system needs to change ... -
Wind Powered Marine Vehicle - A Concept Study
(Master thesis, 2015)In conventional sailboat design, the heeling momentum introduced by the rigid connection of foils in air and water is a limitation on the maximum ve- locity. By removing the hull all together, wetted surface induced drag ... -
Wind turbine drivetrains condition monitoring through SCADA data on farm level
(Master thesis, 2019)The offshore wind industry has grown rapidly over the last decade and drivetrains are increasing in size to reduce the cost of energy. These turbines are operating in a harsh environment. Adopting a preventive maintenance ... -
Wind turbine drivetrains: state-of-the-art technologies and future development trends
(Journal article; Peer reviewed, 2022) -
Wind Turbine Propulsion of Boats and Ships
(Master thesis, 2010)Increasing focus on reduction of CO2 emissions, and the possibility of future severe shortage of oil have sparked renewed interest in wind as supplementary propulsion of merchant ships. Several alternative solutions are ... -
Wind-wave directional effects on fatigue of bottom-fixed offshore wind turbine
(Journal article; Peer reviewed, 2019)The current trend for offshore wind energy is that larger turbines are placed on monopile foundations at increasing water depth. This requires larger foundations, increasing the importance of hydrodynamic loading. It is ... -
Wind-wave misalignment effects on floating wind turbines: motions and tower load effects
(Journal article; Peer reviewed, 2014)The dynamic responses of a spar, tension leg platform (TLP), and two semisubmersible floating wind turbines (FWTs) in selected misaligned wind and wave conditions are investigated using numerical simulation with an ... -
WindBarge - Initial Design and Preliminary Assessment of Fatigue Damage
(Master thesis, 2017)Offshore wind is an increasing sector within renewable energy, and WindBarge aims to fill a gap in the offshore development, with a simple and cost efficient design targeted towards intermediate water depths between 40-60 ... -
Yaw misalignment in powertrain degradation modeling for wind farm control in curtailed conditions
(Peer reviewed; Journal article, 2024)A framework characterizing the degradation of wind turbines for use in multiple-input damage-aware farm control is suggested. The focus is on the fatigue damage of the powertrain (drivetrain + generator) system, but the ... -
Zero Failure Management at Maximum Productivity in Safety Critical Control Room
(Lecture, 2011)Predicted growth in air traffic and demand for increased safety, predictability, and efficiency impose additional demands on Air Traffic Management (ATM) systems. Different technologies are currently under development to ... -
Zero-Emission Autonomous Ferries for Urban Water Transport: Cheaper, Cleaner Alternative to Bridges and Manned Vessels
(Journal article, 2019)Because water is an integral part of day-to-day life for humans, civilizations have generally flourished either in coastal areas or near river basins. Today, about 40% of the world?s population lives near a coast and many ... -
Zero-emission ready
(Master thesis, 2020)Levetiden til et skip strekker seg fra 20 til 30 år. De siste 20 til 30 årene har teknologi blitt mer sofistikert, nye lover og regler er introdusert, vi har vært igjennom en finanskrise og akkurat nå er vi midt i en ...