Blar i Institutt for marin teknikk på tittel
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Global slamming forces on jacket structures for offshore wind applications
(Journal article; Peer reviewed, 2018)This study investigates the global slamming forces due to plunging breaking waves on a jacket structure, based on the statistical analysis of the experimental data from the WaveSlam project. Hammer tests and wave tests ... -
Globally Exponentially Stable Aided Inertial Navigation with hydroacoustic Measurements from A Single Transponder
(Journal article; Peer reviewed, 2017)This paper provides a novel formulation relating underwater range measurements to body-fixed position when several acoustic transceivers are mounted on the vehicle and only one transponder is placed in the vehicle's ... -
Globally Exponentially Stable Filters for Underwater Position Estimation Using an Array of Hydroacoustic Transducers on the Vehicle and A Single Transponder
(Journal article; Peer reviewed, 2018)This paper presents two novel globally exponentially stable position estimators using hydroacoustic measurements from a single transponder to several transceivers on the vehicle. A comparison study of these and several ... -
Gradient-based design optimization of a semi-submersible floating wind turbine
(Master thesis, 2020)This work presents a linearized model of a floating wind turbine using the semi-submersible OOStar base geometry, a 10MW turbine and automation of the potential flow coefficients computation. It is associated with a design ... -
Gradient-Based Design Optimization of Fully-Flexible Floating Wind Turbines Using Modal Analysis
(Chapter, 2023)A variety of substructure concepts for floating offshore wind have been developed. Design optimization can be used to efficiently explore this design space and guide further work. Previous design optimization studies have ... -
Gradient-based Optimization of Jacket Support Structure for Offshore Wind Turbines with the Local Approach
(Master thesis, 2017)The objective of this thesis is the development of a gradient based optimization framework for the local optimization of structural members of an offshore wind turbine with jacket support structure and the implementation ... -
Green Smart Port Energy System Design: Optimal Sizing
(Journal article; Peer reviewed, 2023)The paper proposes an optimal sizing methodology for a green smart port with the presence of renewable energy resources and two energy carriers: electricity and hydrogen. The problem solution provides the optimal size of ... -
Green-water phenomena for feed barges in exposed sea areas
(Master thesis, 2017)Because of high growth in the aquaculture industry, the feeding barges are moving out to more exposed areas. This brings problems such as water on deck. In this master thesis, a shallow water equation code has been constructed ... -
Growth Kinetics of Calcareous Deposits on Thermally Sprayed Aluminum Coatings in Natural Seawater
(Peer reviewed; Journal article, 2022)The formation of calcareous deposits on thermally sprayed aluminum (TSA)-coated surfaces immersed in natural seawater and connected to a cathodic protection system is a recurring issue. There is at present limited knowledge ... -
Guidance & Control Strategies for UUVs
(Master thesis, 2011)Focus on safety and effectiveness in the oil and gas industry has increased the need for advanced control system for underwater vehicles. For remotely operated vehicles (ROVs) effectiveness when conducting deep sea operation ... -
Guidance and control of iceberg towing operation in open water, with experimental testing
(Master thesis, 2013)Icebergs pose serious threats to existing and planned offshore structures, vessels, and operations in Arctic waters such as the East Coast of Canada, East and West Greenland, the Barents Sea, and the Kara Sea. A collision ... -
Guidance and Control of Marine Robotics for Ocean Mapping and Monitoring
(Doctoral theses at NTNU;2018:202, Doctoral thesis, 2018)The ocean is an integral part of life on Earth, both as a source of food and oxygen, a medium of transportation and a major influence on weather and climate. Unfortunately, proper management and preservation of the ocean ... -
Guidance and Decision Making using MachineLearning for Small Autonomous Ships
(Master thesis, 2020)Risikobasert beslutningstaking er viktig for at autonome skip skal unngå kollisjoner. For skip med høy grad av autonomi blir disse beslutningene tatt av systemet, og denne masteroppgaven undersøker bruken av maskinlæring ... -
Guidance and decision-support system for safe navigation of ships operating in close proximity.
(Doctoral thesis at NTNU;2015:305, Doctoral thesis, 2015)This thesis studies the control and operational aspects of Ship-to-Ship (STS) operations. The aim of this tool is to enhance the efficiency and safety of these operations. A stepwise approach has been selected. The first ... -
A Guidance and Maneuvering Control System Design With Anti-Collision Using Stream Functions With Vortex Flows for Autonomous Marine Vessels
(Peer reviewed; Journal article, 2022)Autonomous marine vessels are expected to avoid intervessel collisions and comply with the international regulations for safe voyages. This article presents a stepwise path planning method using stream functions. The dynamic ... -
Guidance and maneuvering principles for autonomous ROV missions in an aquaculture context
(Master thesis, 2021)Bidraget fra denne masteroppgaven er et nytt guidningssystem for navigering av fjernstyrte kjøretøy (ROVer) basert på en konstant referansemodell kombinert med veipunktfølging. Dette bidraget er et resultat av ønsket om å ... -
Guidance Model Representing an Ice Field for Path-Planning in Ice Management
(Chapter, 2020)In the work presented in this paper, the problem on how to represent a simplified ice field in a guidance model, enabling path and maneuver planning for IM operation, has been studied. The use of B-splines and other basis ... -
Halvt nedsenkbar tørrtre plattform: Koblingen mellom det hydro-pneumatiske stigerørsstrekk-systemet, stigerørene og kjølen.
(Master thesis, 2012)Det hydro-pneumatiske strekksystemet til stigerørene virker som en passiv hivkompensator med en olje/gass-akkumulator for a utligne de relative bevegelsene mellom semien og stigerørene. Semiresponsen fører direkte til at ... -
Handling aspects of complexity in conceptual ship design
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:319, Doctoral thesis, 2013)This research examines the handling complexity aspects of conceptual design. Contemporary consensus suggests vessel design must consider new market requirements such as greater emphasis on environmental performance, a ... -
Handling Commercial, Operational and Technical Uncertainty in Early Stage Offshore Ship Design
(Chapter; Peer reviewed, 2016)In this paper, we assess state-of-the-art methods for handling aspects of technical, commercial and operational uncertainty in the early stages of offshore ship design. Uncertainty affects the lifecycle performance of a ...