Blar i Institutt for marin teknikk på tittel
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Deep water ocean surface modelling with ship simulation
(Master thesis, 2011)The scope of this work is to implement a realistic looking ocean simulator with a ship floating on the surface. Foam, and ship wake is included to add to the realism. The application is designed to run on a normally equipped ... -
Defining and Evaluating Long-term Operability of Service Vessels in Exposed Aquaculture
(Master thesis, 2019)Den norske oppdrettsnæringen er tradisjonelt gjennomført i skjermede sjø langs kysten, men har gradvis begynt å bevege seg mot mer utsatte områder på grunn av økende etterspørsel, mangel på produksjonsområde og bedre ... -
Definition of the INO WINDMOOR 12 MW base case floating wind turbine
(Research report, 2021)WINDMOOR is a Competence Building Project (KPN), with the main objective of improving the understanding of loads governing the mooring system design of floating wind turbines (FWTs). As a base case, the project adopts a ... -
Delay Compensation for Real-Time Hybrid Testing
(Master thesis, 2017)Real-time hybrid testing has the potential of being a disruptive addition to the repertoire of experimentalists working in the field of marine technology, where rigorous experimental testing is both commonplace and necessary. ... -
Deriving spatial wave data from a network of buoys and ships
(Peer reviewed; Journal article, 2023)The real-time provision of high-quality estimates of the ocean wave parameters at appropriate spatial resolutions are essential for the sustainable operations of marine structures. Machine learning affords considerable ... -
Deriving the absolute wave spectrum from an encountered distribution of wave energy spectral densities
(Journal article; Peer reviewed, 2018)The objective of ship motion-based wave spectrum estimation is to provide the distribution of wave energy densities in absolute domain. However, as a ship generally advances relative to the progressing waves, any spectrum ... -
Deriving Verification Objectives and Scenarios for Maritime Systems Using the Systems-Theoretic Process Analysis
(Journal article; Peer reviewed, 2018)The process applied for verification of maritime systems lacks the ability to properly examine complex networks of interconnections. Verification is mainly focused on single failures of components, not properly accounting ... -
Description and Analysis of Floating Bridges
(Master thesis, 2017)During the project Ferry-free coastal route E39, directed by National Public Road Administration, NPRA, seven ferry-crossings are intended to be replaced by straight crossing. One of these is Bjrnafjorden, where a proposed ... -
Description and Structural Analysis of a Marine Bridge for the Digernessund crossing
(Master thesis, 2018)The relevance of marine bridges have increased during the past years due to the plans of renewing route E$39$. Different types of marine bridges have been described in this thesis, with focus on the concepts proposed for ... -
Design against ship collisions in accordance with the new DNV RP C204
(Chapter, 2021)A new version of the DNV RP C204 standard for the design of offshore steel structures against accidental loads was released in 2019. The updated recommended practice made considerable changes on the design against ship ... -
Design analysis and optimisation of mooring system for floating wind turbines
(Master thesis, 2011)Lately, focus is put on renewable energy resources as the environmental concerns regarding exploitation of hydrocarbons are increasing. The enormous energy potential found in offshore wind fields is proposed utilized by ... -
Design and analysis for a steel braceless semi-submersible hull for supporting a 5-MW horizontal axis wind turbine
(Doctoral theses at NTNU, 2018:194, Doctoral thesis, 2018)This thesis deals with design and analysis of steel semisubmersible hulls for supporting MW-level horizontal axis wind turbines. The thesis address the following four topics: 1) conceptual design methods, 2) conceptual ... -
Design and Analysis of a Braceless Steel 5-MW Semi-Submersible Wind Turbine
(Chapter; Peer reviewed, 2016)This paper introduces the design data and numerical analysis of a braceless steel semi-submersible wind turbine. The hull of the semi-submersible wind turbine is designed to support a reference 5-MW horizontal axis wind ... -
Design and analysis of a large wind floater - A reinforced concrete pontoon-type semi-submersible supporting the DTU 10MW reference turbine
(Master thesis, 2014)In the project work, the candidate has made a preliminary design of a concrete semi-submersible floater for supporting the DTU 10MW wind turbine. In particular, the focus was the design of pontoons and columns of this ... -
Design and analysis of a semi-submersible vertical axis wind turbine
(Master thesis, 2017)Wind energy are deployed by two types of wind turbines. They are Horizontal Axis Wind Turbine (HAWT) and Vertical Axis Wind Turbine (VAWT), classified according to their axis of rotation. In recent years, offshore wind ... -
Design and analysis of combined floating wave and wind power facilities : with emphasis on extreme load effects of the mooring system
(Doctoral thesis at NTNU;, Doctoral thesis, 2014)A rapid increase in energy demand and the global warming problem has increased the focus on renewable energy resources. Among renewable sources, ocean wave and offshore wind are the topic of this thesis because both ... -
Design and Analysis of Mooring System for Semi-submersible Floating Wind Turbine in Shallow Water
(Doctoral thesis, 2020)Floating wind turbines are necessary to produce power from wind in deeper water where bottom-fixed wind turbines are not economically competitive. However, it is still not clear to which water depth a floating wind turbine ... -
Design and Analysis of Mooring System for Semi-submersible Floating Wind Turbines in Shallow Water
(Master thesis, 2015)There has been a remarkable development in offshore wind energy. From the view of cost efficiency, floating wind turbine becomes more competitive than bottom fixed wind turbine when the water depth comes above 50 m. ... -
Design and Analysis of Safety Link for Emergency Disconnect of Completion and Work-over Marine Risers
(Master thesis, 2011)This master thesis is done in collaboration with Aker Solutions Subsea AS and proposes how one could securely cope with uncontrolled drift-off where the marine riser experience excessive moments and/or tension that will ... -
Design and Analysis of Semi-submersible Floating Wind Turbines with focus on Structural Response Reduction
(Master thesis, 2015)Floating structures as spar, semi-submersibles and TLP have been proposed for offshore wind turbines for deep waters (>60m) according to the report of Arapogianni, Moccia, Williams, & Phillips (2011), where bottom fixed ...