Browsing Institutt for marin teknikk by Title
Now showing items 3163-3182 of 3472
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The status of risk assessments in Norwegian fish farming
(Chapter, 2017)The oceans will become the major contributor to the needed increase in global food production towards 2050. The fish farming industry is characterised by operations that are susceptible to changing weather, wind and currents, ... -
The Surface Wave Effects on the Performance and the Loading of a Tidal Turbine
(Journal article; Peer reviewed, 2018)When tidal turbines are utilized in the most energetic waters where there are significant waves, the assessment of the surface wave effects are of great concerns. The objective of this paper is to contribute to a fundamental ... -
Theoretical and experimental investigation of a free running fishing vessel at small frequency of encounter
(Doktoravhandlinger ved NTNU, 1503-8181; 2013:327, Doctoral thesis, 2013)The hydrodynamic behaviour of a fishing vessel in a seaway was studied. The focus was on small frequencies of encounter, corresponding to following and stern quartering seas, where fishing vessels are susceptible to capsize. ... -
Theoretical and experimental studies of wave diffraction and radiation loads on a horizontally submerged perforated plate
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:22, Doctoral thesis, 2014)Interactions of free-surface waves and submerged perforated structures are far less understood than the interactions of waves and conventional impermeable structures. This motivates the present research to investigate major ... -
Theoretical and Experimental Studies of Wave Impact Underneatch Decks of Offshore Platforms
(Doktor ingeniøravhandling;2001:35, Doctoral thesis, 2001) -
Theoretical and experimental study of wind turbine drivetrain fault diagnosis by using torsional vibrations and modal estimation
(Peer reviewed; Journal article, 2021)This paper provides an analytical proof and the theoretical development of the idea of using the torsional vibration measurements for a system-level condition monitoring of the drivetrain system. The method relies on modal ... -
Theory and Experiments of a Free-Running Fishing Vessel in Stern Sea
(Chapter; Peer reviewed, 2014)Hydrodynamic aspects of a modern fishing vessel during manoeuvring in a seaway was studied theoretically and experimentally. The focus was on small frequencies of encounter, corresponding to following and stern quartering ... -
The Theory of Bond Graphs in Distributed Systems and Simulations
(Chapter, 2016)The bond graph theory provides a firm and complete strategy for making mathematical models and are used in this work to obtain a good relation between connectivity, causality and model fidelity in distributed systems. By ... -
Thermal analysis of marine structural steel EH36 subject to non-spreading cryogenic spills. Part I: experimental study
(Peer reviewed; Journal article, 2021)Liquefied Natural Gas (LNG) spills may cause steel to embrittle, leading to the brittle fracture of marine structures due to the cryogenic temperatures. For the integrity assessment of marine steel structures in the event ... -
Thermal analysis of marine structural steel EH36 subject to non-spreading cryogenic spills. Part II: finite element analysis
(Peer reviewed; Journal article, 2021)In Part I of this paper, six liquid nitrogen (LN2) pool boiling tests were carried out to locally cool down six different EH36 steel plates to cryogenic temperatures. Leindenfrost and Critical Heat Flux (CHF) points of LN2 ... -
Thermal analysis of marine structural steel EH36 subject to non-spreading cryogenic spills: Part III: structural response assessment
(Peer reviewed; Journal article, 2022)An experimental study that allows for thermal-structural analysis of steel structures subject to non-spreading cryogenic spills is described. A local, non-spreading cryogenic spill was replicated by building a liquid ... -
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 ... -
Three-Dimensional Analysis of Slamming
(Dr. ingeniøravhandling, 0809-103X; 2003:85, Doctoral thesis, 2003)Impact between the water and ship, i.e. slamming can cause important global and local effects. A numerical method has been applied to predict water entry loads on three-dimensional bodies. When the local angle between the ... -
Three-dimensional Experimental Investigation of Hydrodynamic Forces and Wake Interaction between Two Square Cylinders in Large-amplitude Oscillatory Flow
(Master thesis, 2023)Dette arbeidet undersøker hydrodynamiske interaksjonskrefter og effekter mellom tredimensjonale kvadratiske sylindre i stor Keulegan-Carpenter-strøm (KC). Dette gjøres primært eksperimentelt, med noen innslag fra den ... -
A Three-Dimensional Model for Strength Assessment of Type-C Independent Cargo Tank Structures
(Peer reviewed; Journal article, 2020)For the analysis of the arrangement and strength of Type-C independent cargo tank structures, the linear spring or rod elements are usually used to model supporting woods, in which one-dimensional and linear contact behaviors ... -
Three-dimensional numerical modeling of local scour around a non-slender cylinder under varying wave conditions
(Chapter, 2015)The three-dimensional numerical model REEF3D is used to simulate the detailed flow field and sediment transport around a non-slender cylinder under regular waves. The location of the free surface is calculated with the ... -
Three-dimensional numerical modelling of wave-induced scour around piles in a side-by-side arrangement
(Journal article; Peer reviewed, 2018)The paper presents the numerical modelling of wave-induced scour around piles in a side-by-side arrangement using the open-source CFD model REEF3D. The model solves the Reynolds-Averaged Navier-Stokes equations to calculate ... -
Three-dimensional numerical modelling of wave-induced scour around piles in a side-by-side arrangement
(Journal article; Peer reviewed, 2018) -
Three-Dimensional Path Planning of Deep-Sea Mining Vehicle Based on Improved Particle Swarm Optimization
(Peer reviewed; Journal article, 2023)Three-dimensional path planning is instrumental in path decision making and obstacle avoidance for deep-sea mining vehicles (DSMV). However, conventional particle swarm algorithms have been prone to trapping in local optima ... -
Three-dimensional streaming in sea bed boundary layer
(Doctoral theses at NTNU;2017:62, Doctoral thesis, 2017)The objective of the work carried out in the present thesis is to obtain new insights into wave- current seabed boundary layers by studying the wave-current interaction for the general case of a non-zero angle between the ...