Institutt for marin teknikk
Recent Submissions
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Numeriske strømningsberegninger av strømning rundt steg-sylindriske konfigurasjoner
(Master thesis, 2020)Denne masteroppgaven presenterer litterære studier og numeriske undersøkelser av den tredimensjonale viskøse strømningen rundt sirkulære sylindere, og steg-sylindere. Den første delen av oppgaven gir en introduksjon til ... -
Optimering av transport av fersk laks fra Norge til Europa
(Master thesis, 2020)Dagens transport av fersk oppdrettslaks fra Norge til Europa skjer hovedsaklig ved hjelp av lastebiler. Det forventes en femdobling av produksjonen av laks i Norge innen år 2050. Dette gjør at alternative transportmuligheter ... -
An Investigation of Sloshing Inside a Closed Fish Farm Cage
(Master thesis, 2020)I denne masteroppgaven, så blir effekten av skvulping i en lukket fiskemerd studert. Prosjektet omhandler et eksperiment og en numerisk simulering i WADAM. En modell av fiskemerden ble laget ved å benytte en bøtte. En ring ... -
Acoustic-Based Probabilistic Localization and Mapping for Unmanned Underwater Vehicles in Aquaculture Operations
(Doctoral theses at NTNU;2020:208, Doctoral thesis, 2020)The aquaculture industry needs automation to meet the world's increasing demand for fish protein. However, it is considered to be one of the most dangerous occupations in Norway due to the required amount of manual labor ... -
Coupled vessel and moonpool responses in regular and irregular waves
(Peer reviewed; Journal article, 2020)Hydrodynamic coupling between the ship and moonpool responses is investigated. Dedicated experiments are carried out in the Ocean Basin at Sintef Ocean. Three different moonpool sizes are studied, where the moonpool length ... -
Quantitative risk assessment of the performance of barriers controlling fire and explosion risk
(Master thesis, 2019)The growing population of the world places an enormous demand for energy in some form or the other. Essentially, this means that the struggle to hunt and retrieve fossil fuels has to continue for the smooth functioning of ... -
Transportation for deep sea mining using underwater vehicle: Conceptual design using a systematic approach
(Master thesis, 2019)Hensikten med denne oppgaven er å foreslå designløsning (er) på konseptuelt nivå for undervannstransport av malm fra havbunn til havn for gruvedrift. Essensen av dyphavs gruvedrift er å utvinne mineraler fra en marin ... -
Spatial variations in wave conditions at aquaculture sites
(Master thesis, 2020)Målet med denne Masteroppgaven er å undersøke romlig variasjon av bølgeforhold på et havbruksanlegg, og å prøve å finne ut om romlig variasjon kan ha en effekt på påliteligheten til lokalitetsundersøkelser slik de gjøres ... -
Risk-Influenced Path Planning based on Online Risk Analysis, Bayesian Networks and the A* Path Planning Algorithm
(Master thesis, 2019)Arbeidet presentert i denne masteroppgaven forsøker å bidra til kunnskapsgrunnlaget for autonome marine fartøy ved å tilby forslag til funksjonalitet i et autonomt fartøys kontrollarkitektur. Funksjonaliteten er basert på ... -
A generic approach to analysing failures in human – System interaction in autonomy
(Peer reviewed; Journal article, 2020)Autonomous systems operation will in the foreseeable future rely on the interaction between software, hardware and humans. Efficient interaction and communication between these agents are crucial for safe operation. ... -
The risk of individual fish being captured multiple times in a catch and release fishery
(Peer reviewed; Journal article, 2019)The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased. If individuals are repeatedly captured, this may have fish welfare consequences. Of 995 Atlantic salmon tagged during catch ... -
Inhomogeneous wave load effects on a long, straight and side-anchored floating pontoon bridge
(Peer reviewed; Journal article, 2020)In this paper, we present a numerical study on the hydroelastic response of a 4.6 km long fjord crossing floating bridge subjected to wave loads. The bridge is straight in design and supported by 35 pontoons along its full ... -
Effect of low temperature on fatigue crack propagation rates of DH36 steel and its butt weld
(Peer reviewed; Journal article, 2019)As common marine steel for polar ships, the fatigue crack propagation rates of DH36 steel at low temperature have a crucial influence on the evaluation of the fatigue strength of polar ships. The purpose of this paper is ... -
Renewable CO2 recycling and synthetic fuel production in a marine environment
(Peer reviewed; Journal article, 2019)Humankind must cease CO2 emissions from fossil fuel burning if dangerous climate change is to be avoided. However, liquid carbon-based energy carriers are often without practical alternatives for vital mobility applications. ... -
Methodology for hazard identification in aquaculture operations (MHIAO)
(Peer reviewed; Journal article, 2019)Norwegian fish farms are expanding into more exposed sites due to a lack of sheltered coastal locations and growing negative ecological consequences close to land. The severe wave and current conditions, irregular and often ... -
Numerical and Experimental Studies of Resonant Flow in Moonpools in Operational Conditions
(Doctoral theses at NTNU;2020:152, Doctoral thesis, 2020)The present work is relevant for ships with moonpools. A moonpool is a vertical opening through the ship hull, typically used to descend objects into the sea. Model tests and numerical simulations are carried out to ... -
Hydrodynamic Loads on Complex Structures in the Wave Zone
(Doctoral theses at NTNU;2020:159, Doctoral thesis, 2020)The hydrodynamic loads on simplified structures relevant for deployment of subsea modules are studied in a two-dimensional setting. Experimental investigations and numerical simulations are performed. In the experiments, ... -
Critical assessment of hydrodynamic load models for a monopile structure in finite water depth
(Peer reviewed; Journal article, 2020)The response from steep and breaking waves for a monopile structure is investigated by analysis of experimental results and by application of numerical models for six irregular sea states. The experimental monopile was ... -
Experimental validation of attitude and rate-sensor bias filter using range-difference measurements
(Peer reviewed; Journal article, 2018)This paper considers the problem of constructing a filter for estimating attitude and rate-sensor bias, that has both proven stability and close-to-optimal performance with respect to noise. The filter is based on measuring ... -
Energy conservation and coupling error reduction in non-iterative co-simulations
(Peer reviewed; Journal article, 2019)When simulators are energetically coupled in a co-simulation, coupling errors alter the total energy of the full system. This distorts system dynamics, lowers the quality of the results, and can lead to instability. Using ...
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