Browsing Institutt for marin teknikk by Title
Now showing items 3320-3339 of 3413
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Verification of a collision avoidance algorithm in open sea and full visibility using fuzzy logic
(Master thesis, 2021)Autonome overflatefartøy er er et populært emne som det er blitt gjort mye forskning på. Ved bruk av autonome overflatefartøy kan man redusere kostnader, øke sikkerhet, pålitelighet, effektivitet og oppnå et mer bærekraftig ... -
Verification of collision avoidance algorithms in open sea and full visibility using fuzzy logic
(Journal article; Peer reviewed, 2023) -
Verification of Collision Avoidance Utilizing Data-driven Fuzzy Logic
(Master thesis, 2023)In all the hazardous accidents at sea, ship collision is always the most frequent one. It has been paid great attention, and International Regu- lations for Preventing Collisions at Sea (COLREG) are being complied with. ... -
Verification of Numerical Offshore Wind Turbine Models Based on Full Scale Alpha Ventus Data within OC5 Phase III
(Chapter, 2018)The main objective of the Offshore Code Comparison Collaboration Continuation, with Correlation (OC5) project, is validation of aero-hydro-servo-elastic simulation tools for offshore wind turbines (OWTs) through comparison ... -
Verifying and Validation of a Manoeuvring Model for NTNU's Research Vessel R/V Gunnerus
(Master thesis, 2012)MARINTEK's ship motion simulation program SIMAN (ShipX manoeuvring module) is used to develop a ship motion model for NTNU's research vessel R/V Gunnerus. SIMAN uses a 3-DOF linear mathematical model to describe the vessel's ... -
Vertical Wave Loads and Response of a Floating Fish Farm with Circular Collar
(Master thesis, 2011)In this master thesis the vertical wave loads and vertical responses of the floating collar of a circular fish farm have been investigated. The response has been investigated for a collar without the presence of mooring ... -
Vessel hydrodynamic model tuning by Discrete Bayesian updating using simulated onboard sensor data
(Peer reviewed; Journal article, 2021)Vessel and wave hydrodynamics are fundamental for vessel motion prediction. Improving hydrodynamic model accuracy without compromising computational efficiency has always been of high interest for safe and cost-effective ... -
Vessel Operations in Exposed Aquaculture: Achieving safe and efficient operation of vessel fleets in fish farm systems experiencing challenging metocean conditions
(Doctoral theses at NTNU;2023:42, Doctoral thesis, 2023)Fartøysoperasjoner i eksponert havbruk Eksponert havbruk vil kreve at servicebåter brukt i havbruksnæringa er tilpasset mer krevende sjøkondisjoner enn i skjermede lokaliteter, slik at evne til å utføre marine operasjoner ... -
Vibration-Based Condition Monitoring of Drivetrains in Large Offshore Wind Turbines in a Digital Twin Perspective
(Doctoral theses at NTNU;2021:109, Doctoral thesis, 2021)According to EU 2050 plan, offshore wind farms based on large floating wind turbines are considered as a main source of power supply in the coming future. Among the turbine systems, drivetrain contributes significantly in ... -
Vibration-based Fault Detection and Condition Monitoring of Mechanical Systems in Wind Turbines
(Master thesis, 2018)An increased energy demand of the future, combined with problems related to climate change and emissions of greenhouse gases, has made solutions for reliable and efficient renewable energy producers attractive. Wind turbines ... -
Virtual Prototyping for Marine Crane Design and Operations
(Doctoral theses;2018:10, Doctoral thesis, 2018)Marine crane system design is an interdisciplinary process involving such as mechanical design, kinematics, multi-body dynamics, hydraulics, and operational control-related tasks. Marine crane operations are inherently ... -
Virtual Prototyping of Maritime Systems and Operations: Applications of Distributed Co-Simulations
(Journal article, 2017)In this work, we demonstrate the use of co-simulation technology in the maritime industry through four relevant examples of applications based on the outcome of the knowledge-building project Virtual Prototyping of Maritime ... -
Viscous flow around a circular cylinder near a plane wall
(Master thesis, 2011)Marine pipelines placed at or near the seabed are exposed to currents and waves. In the presence of a sedimentary seabed, the interaction between the surrounding water motions and the pipeline may cause erosion of sediments ... -
Viscous flow around a simplified model of a Christmas tree
(Master thesis, 2016)In the petroleum industry, a Christmas tree is a structure consisting of valves and spools that sits atop an oil well. In order to better understand the forces acting on a Christmas tree during and after installation, ... -
Viscous Flow Around Finite Lenght Circular Cylinder
(Master thesis, 2012)Viscous flow around circular cylinders is a classical research topic in fluid dynamics with a vast amount of practical applications in the field of offshore marine technology. In the flow around cylinders of finite length, ... -
Viscous Flow Around Inclined Circular Cylinder
(Master thesis, 2017)Circular cylinder is of vital importance in the marine industry. The goal of this thesis is to study the physical phenomenon around the inclined circular cylinder as well as the forces acting on it. The study is mainly ... -
Vision Based Localization for Subsea Intervention
(Chapter; Peer reviewed, 2017)A vision based underwater localization system using fiducial markers is proposed. The system is implemented as a new control mode in a shared control system for ROVs and tested experimentally in a pool. A high accuracy ... -
Vision-Aided Inertial Navigation for Underwater Vehicles Using ArUco Markers
(Master thesis, 2021)Skiftet fra tradisjonell olje- og gassproduksjon mot produksjonsenheter på havbunnen har skapt et økt behov for undervannsoperasjoner. Dette har motivert bruken av autonomi for å effektivisere operasjoner og redusere ... -
Visual Aided Deep Learning Applications for Underwater Operations
(Master thesis, 2019)Den 4. industrielle revolusjonen har pågått de siste fire årene og resultater har begynt å vise seg i industrimarkedet. Google slipper stadig ny teknologi som kan slå mennesker i et mangfold av strategispill og de har ... -
Visual Close-range Navigation and Docking of Underwater Vehicles Using ArUco Markers
(Master thesis, 2022)Det er økende interesse fra forskningsmiljøer rundt undervannsrobotikk i permanent boende autonome hjelpesystemer for undervannsroboter. Disse systemene vil drastisk senke CO2-fotatrykket og kostnadene til undervannsoperasjoner, ...