Institutt for marin teknikk: Recent submissions
Now showing items 1-20 of 3448
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The Safety Case for Autonomous Systems: An Overview
(Research report, 2023)The International Workshop for Autonomous System Safety (IWASS) is a joint effort by the B. John Garrick Institute for the Risk Sciences at the University of California Los Angeles (UCLA-GIRS), the Norwegian University of ... -
Experimental study of wave diffraction loads on a vertical circular cylinder with heave plates at deep and shallow drafts
(Peer reviewed; Journal article, 2024)This study focuses on wave diffraction loads influenced by heave plates at deep and shallow submerged depths. An extensive experimental campaign is conducted on a fixed vertical and free-surface piercing circular cylinder ... -
Storm Characteristics for Monopile Wind Turbine Foundation Design
(Chapter, 2024) -
Performance of a Motion-Compensated Gripper Frame for Monopile Installation
(Master thesis, 2024)The projected rise in monopile installations for offshore wind turbines has spurred interest in innovative installation methods to install larger monopiles using floating vessels while simultaneously enhancing workability ... -
Hyperparameter tuning framework for calibrating analytical wake models using SCADA data of an offshore wind farm
(Journal article; Peer reviewed, 2024)This work presents a robust methodology for calibrating analytical wake models, as demonstrated on the velocity deficit parameters of the Gauss–curl hybrid model using 4 years of time series supervisory control and data ... -
Investigating Statistical Modelling of Excitation Forces in Inhomogeneous Waves
(Chapter, 2024)In coastal areas, and especially fjords, the wave field can present inhomogeneities that affect the responses of floating bridges among other very large floating structures. Recent studies have begun to include the effects ... -
Passive Mooring-based Turbine Repositioning Technique for Wake Steering in Floating Offshore Wind Farms
(Peer reviewed; Journal article, 2024)Power loss due to wake effects from upstream wind turbines is an important factor in the design of floating wind farms. These wake disturbances also increase fatigue loads on downstream units. Economic-driven wind farm ... -
Scalable SCADA-Based Calibration for Analytical Wake Models Across an Offshore Cluster
(Peer reviewed; Journal article, 2024)A multi-level hyperparameter optimization framework is performed to calibrate analytical wake models in the context of multiple wind farms within the Belgian-Dutch offshore cluster. The calibration, applied on the TurbOPark ... -
Atmospheric stability and wake meandering on floating wind turbines
(Doctoral theses at NTNU;2024:291, Doctoral thesis, 2024)Wind energy represents a key low carbon technology to meet the normative Net-Zero Emissions scenario by 2050. Onshore and bottom-fixed offshore wind energy are wellestablished technologies. Most of the current commercial ... -
Fluid-Structure Interaction Analysis and Design of Extreme Wave Slamming of Floater Columns for a Semisubmersible FOWT
(Master thesis, 2024)Bølgeslag som kommer av ekstreme sjøtilstander er et kritisk fenomen i marin teknikk, særlig med tanke på design og sikkerhet av havstrukturer. Det refererer til det plutselige sammenstøtet av bølger mot en struktur, ofte ... -
Digital Twin Framework for Real-Time State Prediction, Remaining Useful Life Estimation and Control of Floating Offshore Wind Turbines
(Master thesis, 2024)Vindenergi er forventet å være en viktig energikilde på en global skala i fremtiden, og flytende havvind gjør det mulig å utnytte vind i dype farvann. Imidlertid er værtilstandene i disse områdene tøffe, og kostnadene er ... -
Estimation of Hydrodynamic Coefficients using Physics Informed Neural Networks
(Master thesis, 2024)I designfasen av havkonstruksjoner blir hydrodynamiske parametere identfisert ved hjelp av lineær potensialteori. Estimater fra lineær potensialteori vil i mange tilfeller avvike fra oppførsel funnet i modeltester. Dette ... -
Verdens plastproblem - går det på helsa løs?
(Research report, 2024) -
A Critical Review of Constitutive Models Applied to Ice-Crushing Simulations
(Peer reviewed; Journal article, 2024)In marine engineering, understanding the compressive behaviour of ice is crucial for accurately modelling ice loads on ships and offshore structures in ice-prone waters. Over the past few decades, numerous studies have ... -
Study on time-varying hydrodynamic coefficients for large-scale bottom-founded wind turbines and their impact on fatigue
(Master thesis, 2024)Utforskningen av utviklingen av bunnfaste offshore vindturbiner, med fokus på monopæler, indikerer at selv om den flytende offshore vindsektoren er i ferd med å utnytte dypere områder, er det fortsatt en god grunn til å ... -
A case study of rotor sails for electric pendulum ferries
(Master thesis, 2024)Ettersom den globale skipsfartsindustrien forsøker å begrense sin miljøpåvirkning, har den norske regjeringen satt et mål om å redusere utslipp av klimagasser med 50% innen 2030 for innenriks sjøfart og fiske. Som svar på ... -
MOMEC - Mapping of Energy Consumers
(Research report, 2023)Here, we present a study of the power consumption for different vessel types, and list some of the highest loaded consumers in different operations. In this brief study we are using Electrical Power Load Analysis (EPLA) ... -
Short-term extreme mooring loads prediction and fatigue damage evaluation for station-keeping trials in ice
(Journal article, 2021)Full-scale tests of station-keeping trials (SKT) in drifting ice were conducted as part of research activities undertaken by the company Equinor in the Bay of Bothnia in March 2017. In the SKT project, Magne Viking was ... -
Sea-Ice States: Unsupervised Segmentation from Multispectral Data Based on Mumford–Shah Functional
(Journal article, 2024) -
Modelling and design of Pre/post tensioned reinforced concrete floaters of FOWTs against ship collisions
(Master thesis, 2024)Utviklingen av flytende offshore vind turbiner er nødvendig for den økende etterspørselen av bærekraftig energi. Fremtidens vindparker kan ligge i mer åpne havområder, og utsettes for mer krevende driftsforhold. Det kreves ...