Institutt for marin teknikk: Nye registreringer
Viser treff 21-40 av 3436
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Feasibility of a green corridor serviced by a battery-powered cargo ship
(Master thesis, 2024)Internasjonal skipsfart er hovedbidragsyteren til transporterte varer, og står for transport av mer enn 80\% av de transporterte varene. Den internasjonale sjøfartsorganisasjonen (IMO) har satt en strategi for klimagassutslipp ... -
Development and testing of a risk-based control system for autonomous ships
(Journal article; Peer reviewed, 2023)This paper presents a method for designing and verifying a control system with risk-based decision-making capabilities to improve its intelligence and enhance the safe operation of autonomous systems. The decision-making ... -
Shipping Safety in the Arctic - Contributions to the understanding of shipping risk during escort and convoy operations
(Doctoral theses at NTNU;2024:200, Doctoral thesis, 2024)The decline in Arctic ice extent has drawn increasing attention to Arctic shipping. In comparison to traditional routes, Arctic routes offer substantial advantages, particularly in terms of time efficiency and cost ... -
Stability Assessment of a Semisubmersible Floating Offshore Wind Turbine
(Master thesis, 2024)Den økende etterspørselen etter fornybar energi har ledet til større interesse for utvikling av flytende havvindturbiner. Havvindparker tilbyr muligheten til å utnytte omfattende områder med stabil vind, noe som gjør dem ... -
Designing a marine systems design specialization track at NTNU
(Journal article; Peer reviewed, 2024)In this paper we describe and discuss the current and future MSc specialization programme in marine systems design at the Norwegian University for Science and Technology (NTNU). We follow the structure of a design process. ... -
Early Marine Systems' Design - Cracking the wicked problem - The case of a novel biomass harvesting vessel
(Journal article; Peer reviewed, 2024)Several IMDC contributions have argued for a better approach to capture stakeholders' expectations in vessel newbuilding projects' execution. The appropriate processes of requirements elucidation are, however, often forgotten ... -
Risk-Based Control of Autonomous Surface Ship
(Doctoral theses at NTNU;2024:174, Doctoral thesis, 2024)The last few decades have seen tremendous technological development in the maritime industry. Improvements in navigation systems such as Global Navigation Satellite Systems have reduced measurement error and uncertainty ... -
Towards carbon-free mobility: The feasibility of hydrogen and ammonia as zero carbon fuels in spark ignition light-duty vehicles
(Peer reviewed; Journal article, 2024)Global warming is a major environmental issue caused by the release of greenhouse gases, such as carbon dioxide into the atmosphere. Light-duty vehicles (LDVs) including passenger cars and light-duty trucks, are a significant ... -
Experimental reproduction of inhomogeneous fjord waves
(Journal article; Peer reviewed, 2024)Waves in coastal areas and fjords can present inhomogeneities that affect the responses of very large floating structures. However, spatial inhomogeneities of waves are usually not included in model testing. In this paper, ... -
Numerical and experimental hydrodynamic study of a vertical circular floating dock in waves
(Doctoral theses at NTNU;2024:182, Doctoral thesis, 2024)A hydrodynamic analysis of a free-floating bottom-less upright circular dock in waves conceived for the installation of spar-type floating offshore wind turbines (FOWT) is carried out in this work for incident wave frequencies ... -
Simulating emergency response for large-scale fish welfare emergencies in sea-based salmon farming
(Journal article; Peer reviewed, 2022)This paper presents a simulation model for analyzing emergency response for fish welfare emergencies in sea-based fish farming. The model enables decision-makers to evaluate the emergency preparedness level against incidents ... -
Digital Twins for Fault Prognosis in Offshore Wind Turbine Drivetrains
(Doctoral theses at NTNU;2024:178, Doctoral thesis, 2024)This thesis investigates the relatively novel concept of Digital Twin (DT) in the context of offshore wind turbine drivetrains. DT can be described as a virtual representation of a system or asset that calculates system ... -
A phase-time-path-difference approach for online wave direction and wave number estimation from measured ship motions in zero and forward speed using a single inertial measurement unit
(Journal article; Peer reviewed, 2023)This study investigates the potential capability of a relatively new and unexplored signal-based approach for shipboard wave estimation. The approach uses the phase-time-path-differences (PTPDs) from an array of shipboard ... -
Flow topology in the gap and wake of convex curved tandem cylinders
(Journal article; Peer reviewed, 2023)Flow around curved tandem cylinders in the convex configuration has been studied by means of direct numerical simulations, for a Reynolds number of 500 and a nominal gap ratio of 3.0. Spanwise variation of flow regimes, ... -
Asymmetric cellular bi-stability in the gap between tandem cylinders
(Peer reviewed; Journal article, 2023)In the gap region of tandem cylinders, within the reattachment regime, bi-stability is seen to be cellular. Direct numerical simulations at a Reynolds number of 500, and a gap ratio of 3.0, show that shedding of gap vortices ... -
The Influence of the Rake Angle on the Cutting of Low-Lead and Lead-Free Brass Alloys
(Chapter, 2023)Components manufactured from brass alloys are widely used in plumbing systems. Traditionally, lead is added to the alloy to improve the machinability. In recent years, the use of lead has been restricted due to health and ... -
Hydroelastic response of a flexible spar floating wind turbine: Numerical modelling and validation
(Journal article; Peer reviewed, 2023)This study examines the hydroelastic response of a large floating wind turbine (FWT) through coupled numerical analysis. Four numerical models with different levels of complexity in the hydrodynamic and structural modelling ... -
Overview of the potential of floating wind in Europe based on met-ocean data derived from the ERA5-dataset
(Journal article; Peer reviewed, 2023)This paper provides an overview of the potential of floating wind in Europe. Wind and wave data from the ERA5 dataset as well as bathymetry data are analysed to identify regions suitable for floating wind deployment. The ... -
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 ... -
Flow over a single shallow dimple
(Peer reviewed; Journal article, 2024)