Browsing Institutt for marin teknikk by Issue Date
Now showing items 521-540 of 3421
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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 ... -
How Lamina Age Influence Photosynthetic Response to Light Variations in Saccharina latissima
(Master thesis, 2014)Fotosyntetisk rate, målt på grunnlag av in vivo klorofyll a fluorescens, som en funksjon av økende lamina alder ble undersøkt i Saccharina latissima fra Trondheimfjorden, Norge i vinter, sommer og høst 2013. Sesongens ... -
Numerical Investigation of Ship's Continuous-Mode Icebreaking in Level Ice
(Doctoral Theses at NTNU, 1503-8181; 2014:132, Doctoral thesis, 2014)This thesis is a summary of studies that were carried out as part of candidacy for aPhD degree. The purpose of these studies was to evaluate some factors in shipdesign that are intended for navigating in ice using numerical ... -
Investigation on the Performance of the Universal Buoyancy System
(Master thesis, 2014)Future increase in the market demand for liquefied natural gas (LNG) will pose new challenges to the existing infrastructure for LNG distribution. The Universal Buoyancy System (UBS) seeks to contribute to the solution of ... -
Modeling of Hybrid Marine Electric Propulsion Systems
(Master thesis, 2014)Energy storage devices integrated in diesel-electric power systems is believed to have impact also in marine applications, when it comes to emissions and fuel efficiency. For certain load conditions energy storage can act ... -
A Bond Graph Approach for Modelling Systems of Rigid Bodies in Spatial Motion
(Master thesis, 2014)The research presented in this thesis seeks to improve the current state and technique for dynamic modelling of systems of rigid bodies in spatial motion. The research have been focused around modelling of underwater ... -
Determination of Minimum Propulsion Power to Maintain the Manoeuvrability of Ships in Adverse Conditions
(Master thesis, 2014)The Energy Efficiency Design Index (EEDI), quantifying the amount of carbon dioxide emitted per gram fuel consumed, is to be fully implemented in the coming years. Compliance with the EEDI requirements can be achieved in ... -
Thermodynamical Analysis Tool in MATLAB: Development of a thermodynamical analysis tool for the Combustion Rig in the combustion laboratories at MARINTEK, Trondheim
(Master thesis, 2014)To meet the increasing world populations need for transportation, fossil fueled ships will are ready to offer their services. Less fuel fuel consumed per cargo unit transported, is favourable for both the operator and the ... -
Can the water on deck influence the parametric roll of a FPSO? A numerical and experimental investigation
(Journal article; Peer reviewed, 2014)Parametric roll and water on deck are investigated numerically and experimentally for a FPSO ship in head-sea regular waves in the zone of the first fundamental resonance. On the numerical side, a weakly-nonlinear potential ... -
Modelling of Loads and Responses of a Permaskirt on a Flexible Net Cage Fish Farm
(Master thesis, 2014)As the numbers of fish farms are increasing, the problems with lice are becoming of greater importance. The lice cause diseases and death, leading to loss in profit for the fish farms as well as reduction of the wild stock. ... -
Optimization of Onshore Base and Hub Location Supplying Oil and Gas Installations in the Barents Sea
(Master thesis, 2014)This report present an academic study of a location-routing problem combined with the fleet size and mix vehicle routing problem. Operations research (OR) is utilized to examine a concept of Statoil s supply logistic for ... -
Performance Monitoring in Teekay Petrojarl: Criteria, Metrics, Utilisation of Data and Improvement Processes
(Master thesis, 2014)The petroleum industry is capital intensive and oil companies are dependent on stable and reliable production. Costs in early project phases must be balanced by revenue in production phases. Improving performance to ensure ... -
Experimental investigation of the superposition principle for a free surface roll damping tank
(Master thesis, 2014)Roll stabilizing tanks are widely used on offshore supply vessels and fishing vessels to ensure a better and safer working environment. However, the free surface of a partially filled tank is subject to sloshing. On one ... -
Fatigue assessment of welded joints taking into account effects of residual stress
(Doctoral thesis at NTNU;2014:311, Doctoral thesis, 2014)The aim of the study is to contribute towards a better understanding of the effect of residual stress and shakedown on fatigue strength of welded joints. Residual stress may have a significant effect on the fatigue ... -
Dynamic Analysis and Verification of the Universal Buoyancy System
(Master thesis, 2014)Liquefied Natural Gas (LNG) is becoming an increasingly popular alternative to traditional marine fuels, as it is a cost-effective solution so comply with the new Emission Control Area (ECA) sulphur emission regulations ... -
Loads on the Gravity-net-cage from Waves and Currents
(Master thesis, 2014)Due to limited space close to shore and environmental concerns, the trend has become to move the fish farms to more exposed areas. This motivates the study of loads on the fish farm in more energetic currents and waves.In ... -
Analytical & Numerical Analysis of Ship/FPSO Side Structures Subjected to Extreme Loading with Emphasis of Ice Actions
(Master thesis, 2014)AbstractIACS has implemented a unified requirement (UR) for polar going ships. This thesis work consists of a well understanding of the backgrounds of IACS UR, the way of applying those rules to the structure and the ... -
Optimal recursive thrust allocation applied for ROV Minerva
(Master thesis, 2014)This master thesis considers the thrust allocation problem of the Remotely Operated Vehicle Minerva, operated by the NTNU Applied Underwater Robotics Laboratory. The Minerva is reported to have some issues with the yaw ... -
Dynamic Response of Flexible Pipes Considering Different Damping Models
(Master thesis, 2014)Flexible pipe is a layered structure composed of plastic and steel materials. Under a large bending moment, the pipe layers may slide relative to each other due to internal friction. The moment curvature relationship for ... -
A Numerical Study on Stratified Shear Layers With Relevance to Oil-Boom Failure
(Chapter, 2014)Interface dynamics of two-phase flow, with relevance for leakage of oil retained by mechanical oil barriers, is studied by means of a 2D lattice-Boltzmann method combined with a phase-field model for interface capturing. ...