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Changes in surge and pitch decay periods of floating wind turbines for varying wind speed
(Journal article; Peer reviewed, 2019)Recently published experimental results show variations in surge and pitch decay periods of floating wind turbines (FWTs) subjected to different incident wind velocities. This paper explores the external loads acting on a ... -
Changes in vessel traffic patterns following new platform installation
(Master thesis, 2017)Installation of a new offshore facility in an oil field is affected by the vessel routes that sail in the vicinity of the installation area. To avoid a collision with facility or reduce the collision frequency, navigating ... -
Chapter 9 Modeling and Analysis of Offshore Floating Wind Turbines
(Chapter, 2018)Offshore wind reserves vast amount of energy that could be effectively tapped to meet the demand for a greener global energy portfolio. To date, only a small fraction of offshore wind resources has been accessed worldwide, ... -
Characterisation of extreme load responses of a 10-MW floating semi-submersible type wind turbine
(Peer reviewed; Journal article, 2023)The global average size of offshore wind turbines has increased steadily from 1.5 MW to 6 MW from 2000 to 2020. With this backdrop, the research community has recently looked at huge 10–15 MW class floating offshore wind ... -
Characterisation of Near-Inertial Internal Waves in the Deep Hypolimnion of a Large Lake (Lake Geneva)
(Master thesis, 2022)Water quality in lakes is determined by concentrations in various dissolved substances. Deep lakes in mild climates, such as Lake Geneva, are thermally stratified water bodies, which means they present a vertical structure ... -
Characteristics of breaking irregular wave forces on a monopile
(Journal article; Peer reviewed, 2019)The substructures of offshore wind turbines are subjected to extreme breaking irregular wave forces. The present study is focused on investigating breaking irregular wave forces on a monopile using a computational fluid ... -
Choke condition and performance monitoring
(Master thesis, 2010)Sand production is a common complex problem in the oil and gas industry, and choke valves is typically suffering for this in form of erosive damage. The degree of erosive damage is decided by many different factors where ... -
Clarifying the concept of operational risk assessment in the oil and gas industry
(Journal article, 2018)There is an increasing interest in risk and safety research to reflect risk fluctuations in operational phase to avoid major accidents from happening. A structured review that covers operational risk assessment, dynamic ... -
Classification of risk to support decision-making in hazardous processes
(Journal article, 2015)Application of risk assessments developed for the design phase to support decision-making in operational settings has exposed weaknesses in how risk is analysed and expressed in an operational context. The purpose of this ... -
Clump-weight trawl gear interaction with submarine pipelines
(Master thesis, 2012)Clump weights come in several shapes, with a mass generally between 2 to 9 tons [5]. With extensive oshore development in the last decades, vast networks of pipelines are installed on the sea bottom. With both pipeline ... -
Clump-weight Trawl Gear Interaction with Submarine Pipelines
(Master thesis, 2011)A recent development in bottom trawling is the use of twin trawl equipment, where two trawl nets are towed side by side from a single vessel. This increases the catch rate and efficiently of the trawler. Governed by cost ... -
Co-Simulation of a Marine Hybrid Power System for Real-Time Virtual Testing
(Chapter, 2021)Co-simulation enhances the efficient simulation development even for complex systems reducing time to market and computational effort. This work aims to develop a marine hybrid power system simulator using a co-simulation ... -
Co-Simulation of a Marine Offshore Vessel in DP-Operations Including Hardware-In-the-Loop (HIL)
(Chapter; Peer reviewed, 2017)In this work, a co-simulation case study of a marine offshore surface vessel in Dynamic Positioning (DP) operation, where the DP-controller is placed on an Arduino® micro-controller, is presented. The reasons for using ... -
Co-simulation of the propulsion system onboard the icebreaker Oden.
(Master thesis, 2020) -
Code-to-Code Verification of End-Anchored Floating Bridge Global Analysis
(Chapter, 2018)A code-to-code comparison of the dynamic characteristics of an end-anchored floating pontoon bridge is presented for two commercial software commonly used in the offshore industry, i.e. SIMO-RIFLEX and ORCAFLEX. Furthermore, ... -
Coexistence of natural and forced vortex dislocations in step cylinder flow
(Journal article; Peer reviewed, 2023) -
Collision avoidance for multiple autonomous surface vehicles considering information exchange – A multi-agent deep reinforcement learning approach
(Master thesis, 2022)Autonome overflatefartøy har vært et tema som har vært under intense studier på det maritime feltet, fordi autonomi gir et godt potensiale for å redusere kostnader, øke sikkerhet, pålitelighet, effektivitet og bærekraft. ... -
Collision avoidance for multiple autonomous surface vehicles utilizing information exchange - A centralized optimization based approach
(Master thesis, 2022)Centralized collision avoidance algorithms for multiple autonomous surface vehicles are frequently proposed, but most of them assume ideal condition. However, vessels’ non-collaboration and non-compliance motion in Convention ... -
Collision avoidance on maritime autonomous surface ships: Operators’ tasks and human failure events
(Journal article; Peer reviewed, 2019)Numerous research and industry initiatives have increasingly aimed at developing maritime surface autonomous ships (MASS). Among the motivations for the use of MASS is the potential increase in safety when compared to ... -
Collision Between Platform Deck and Service Vessel Wheelhouse
(Master thesis, 2013)Collisions between ships and oshore structures are rarely occurring events, butpose a constant threat to the safety at sea. Observed trends in recent years hasshow that the size of both oshore structures and servicing ...