Browsing Institutt for marin teknikk by Title
Now showing items 1958-1977 of 3613
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Life Extension Study of FPSO Systems
(Master thesis, 2010)The objective of this Master Thesis has been to look into the life extension project of the Petrojarl Foinaven FPSO. The Foinaven FPSO has been operating for British Petroleum since 1997 and the objective is to continue ... -
Lifetime profit modelling of ageing systems utilising information about technical condition
(Doktoravhandlinger ved NTNU, 1503-8181; 2008:6, Doctoral thesis, 2008)This dissertation focuses on a framework to support decision making in the management of ageing (oil and gas) facilities. Within the oil and gas sector on the Norwegian Continental Shelf the topic has become important as ... -
Limiting mechanisms for the torque density of wind turbine drivetrains
(Master thesis, 2019)As wind turbines continue to increase in size, so do the loads acting on the drivetrain. To handle the higher loads the mass of the drivetrain needs to increase. A better understanding of this mass increase can result in ... -
Line-Of-Sight-based maneuvering control design, implementation, and experimental testing for the model ship C/S Enterprise I.
(Master thesis, 2014)This report documents the progress, methods and engineering in building and testing theframework for CyberShip Enterprise 1. The main focus have been to modularize, standardize and improve the infrastructure and the operative ... -
Linear analysis and multidisciplinary design optimization of the floater OO-Star
(Master thesis, 2021)In this report, in the continuity of B.de Renty's Master's thesis, a linear framework for the analysis and the optimization of floating wind turbines with automated diffraction/radiation computations, is proposed. A trial ... -
Linear sloshing in a 2D rectangular tank with a flexible sidewall
(Journal article, 2017)A 2D rectangular sloshing tank with a flexible sidewall have been studied analytically and numerically, with a focus on the coupling between sloshing and the flexible wall. This analysis introduces new knowledge of the ... -
Linear wave response of a 2D closed flexible fish cage
(Journal article; Peer reviewed, 2019)Closed flexible fish cages (CFFC) are proposed as a new concept in marine aquaculture, replacing the conventional net cages in order to meet ecological challenges related to fish lice and escapes. A linear mathematical ... -
Linear wave-induced dynamic structural stress analysis of a 2D semi-flexible closed fish cage
(Peer reviewed; Journal article, 2020)Closed fish cages in the sea are proposed as a new concept in marine aquaculture, replacing the conventional net cages in order to meet ecological challenges related to fish lice and escapes. A closed fish cage can be ... -
LNG as fuel in global trades for Höegh car carriers
(Master thesis, 2011)LNG shipping is tracking back to the 1950s, and has for more than half a century been finding promising. It is not until the last years LNG has been taken into commercial shipping as a fuel, and more widely considered a ... -
LNG as fuel on fishing vessels - Assessment of economic feasibility and environmental impact
(Master thesis, 2018)Fisheries have had an important role in the Norwegian economic growth and culture for centuries. While regulatory requirements concerning emission abatement are becoming more demanding, measures aimed at improvement of ... -
LNG Carrier Boil-Off Gas Management Optimization with Re-liquefaction System
(Master thesis, 2024)Denne masteroppgaven gjennomfører et omfattende literatursøk av moderne flytende naturgass (LNG) skip, med fokus på deres lastetanker, propulsjonssystem og gjenflytningssystem, med hensikten å formulere en metode for optimal ... -
LNG-fuelled fishing vessels: A systems engineering approach
(Journal article; Peer reviewed, 2017)Air emissions from fishing vessels must be reduced to comply with progressively stringent environmental regulations. Among the available solutions, liquefied natural gas (LNG) fuel may represent a promising solution, ... -
Load and Response Analysis of a 10 MW SPAR Wind Turbine
(Master thesis, 2023)Teknologi basert på fornybar energi har vekket betydelig interesse, og det er viktig å fortsette forskningen og utviklingen av disse teknologiene. Overgangen til fornybar energi er i gang, med ønsket om å fase ut fossile ... -
Load and response analysis of wind turbines under atmospheric icing and controller system faults with emphasis on spar type floating wind turbine
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:192, Doctoral thesis, 2013)Deep water offshore wind is a vast, reliable and economical energy source. Floating offshore wind turbines are potential systems to capture this energy which need to be analysed and designed in order to achieve economic ... -
Load and Response Calculation from Breaking Wave Impacts on Columns of Semisubmersible Platforms
(Master thesis, 2017)Marine structures are subjected to slamming loads during their operating life. Increasing concerns are raised regarding the calculations of extreme loading caused by breaking waves. Slamming loads are associated with ... -
Load Charts Calculations for Offshore Pedestal Cranes by Motion Response Analysis
(Master thesis, 2014)In this Master's thesis the sea lift operation from a supply vessel onto a oil platform has been evaluated. Two models have been built and analysed with different input parameters, as well as compared with the current load ... -
Load Control for Real-time Hybrid Model Testing using Cable-Driven Parallel Robots
(Doctoral theses at NTNU;2021:284, Doctoral thesis, 2021)Real-time hybrid model testing (ReaTHM testing) is a method for emulating ocean structures that combines numerical methods with traditional hydrodynamic model testing. This is done by partitioning the ocean structure under ... -
Load Frequency-Based Power Management for Shipboard DC Hybrid Power Systems
(Peer reviewed; Journal article, 2020)The development of marine integrated power systems has enabled all-electric ship, with electric propulsion systems to be powered from diesel-generators. In addition, vessels with DC hybrid power sources such as fuel cell, ... -
Load transfer from coupled analysis to structural design of FWTs
(Master thesis, 2022)It is of research interest to establish a technique to capture the loads on the structural members of the offshore wind turbine when they are exposed to simultaneous wind and wave action. Unlike other floating offshore ... -
Loading and blade deflection of a tidal turbine in waves
(Journal article; Peer reviewed, 2019)A coupled numerical model has been developed and validated to study the fluid–structural interaction responses of a three-bladed tidal turbine in aligned waves and current. The unsteady blade element momentum (BEM) theory ...