Browsing Institutt for marin teknikk by Title
Now showing items 1909-1928 of 3579
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Laboratory experiments on shared-energy collisions between freshwater ice blocks and a floating steel structure
(Journal article; Peer reviewed, 2017)Ship collisions with floating ice in which the ship sustains damage are in the shared-energy regime – both the ice and the ship dissipate energy through inelastic deformations. The physics of these events are rarely studied. ... -
Laksens møte med brønnbåt
(Bachelor thesis, 2024)Denne oppgaven går nærmere inn på laksens møte med brønnbåter i ulike livsstadier og situasjoner. Ettersom næringen har vokst, har bruken av fartøy som behandler og frakter laks fått en stor rolle for at dagens oppdrettsnæring ... -
Large Eddy Simulations of flow around a circular cylinder close to a flat seabed
(Journal article, 2016)Large Eddy Simulations (LES) with Smagorinsky subgrid scale model are used to study the turbulent flow and wake dynamics behind a circular cylinder close to a horizontal, plane wall at subcritical Reynolds number. The focus ... -
Large Eddy Simulations of Flow around a Circular Cylinder in the Vicinity of a Wall at Reynold Number of 13100
(Chapter, 2013)The flow around a circular cylinder in the vicinity of a rigid wall at Reynolds number 13100 is simulated using Large Eddy Simulations (LES) with Smagorinsky subgrid scale model. The main purpose of the present work is to ... -
Large Eddy Simulations of flow around a smooth circular cylinder in a uniform current in the subcritical flow regime
(Journal article; Peer reviewed, 2014)Three-dimensional flow around a circular cylinder in a steady, uniform current at subcritical Reynolds numbers (Re) is investigated. The flow is simulated using Large Eddy Simulations (LES) with Smagorinsky subgrid scale ... -
Large Eddy simulations of flow around tandem circular cylinders in the vicinity of a plane wall
(Journal article; Peer reviewed, 2018)To investigate the three-dimensional flow around free-spanning, tandem marine pipelines, Large Eddy Simulations (LES) with Smagorinsky subgrid scale model are performed using the open-source code OpenFOAM. Two circular ... -
Large Eddy Simulations of Flow Around Tandem Cylinders Close to a Horizontal Wall
(Journal article; Peer reviewed, 2015)This study focuses on the numerical simulations of the flow around tandem cylinders placed in the vicinity of a rigid, horizontal plane wall. The cylinders are immersed close to a plane wall in a steady current with a ... -
Large Eddy Simulations of flow around two circular cylinders in tandem in the vicinity of a plane wall at small gap ratios
(Journal article; Peer reviewed, 2018)Large Eddy Simulations (LES) with Smagorinsky subgrid scale model have been performed for the flow past two circular cylinders in tandem placed in the vicinity of a horizontal plane wall at very small gap ratios, namely ... -
Large Eddy Simulations of Flow Past Two Pipelines in Tandem in Close Proximity to the Seabed
(Chapter, 2017)Three-dimensional Large Eddy Simulations (LES) with Smagorinsky subgrid scale model have been performed for the flow past two free-spanning marine pipelines in tandem placed in the vicinity of a plane wall at a very small ... -
Large Eddy Simulations of Three-Dimensional Flow Around a Pipeline in a Uniform Current
(Chapter; Peer reviewed, 2012)Three-dimensional (3D) modeling of the flow around a circular cylinder in a steady, uniform current subjected to low and intermediate Reynolds numbers (Re) is considered. Large eddy simulations (LES) are used to simulate ... -
Large floating structure with free-floating, self-stabilizing tanks for hydrocarbon storage
(Journal article; Peer reviewed, 2019)Hydrocarbon is a major source of energy for sustainable development. Storage of hydrocarbon products, however, requires a significant amount of land space to land-scarce countries like Singapore. This paper presents an ... -
Large inelastic deformation resistance of stiffened panels subjected to lateral loading
(Journal article, 2018)This paper presents a simplified formulation for the assessment of large deformation resistance of stiffened panels subjected to lateral loading. The method is based on rigid plastic material assumptions and the use of ... -
Large-eddy simulations of cross-flow around ship sections
(Doctoral thesis at NTNU;2016:111, Doctoral thesis, 2016)This thesis reports numerical simulations of three-dimensional (3D) unsteady cross flow over two ship sections located side-by-side. The ship sections have different breadth and draft conditions which represent typical ... -
Lateral response controlfor large-diameter monopile offshore wind turbines
(Master thesis, 2020)Offshore vindturbiner er regulert av et kontrollsystem med det overordnede målet å optimalisere for energiproduksjon. Dette systemet kontrollerer generatorens dreiemoment og rotorblad-pitch med hensyn til den innkommende ... -
Lattice Boltzmann Simulations on a GPU: An optimization approach using C++ AMP
(Master thesis, 2012)The lattice Boltzmann method has become a valuable tool in computational fluid dynamics, one of the reasons is due to the simplicity of its coding. In order to maximize the performance potential of today s computers, code ... -
Launch and recovery of ROV: Investigation of operational limit from DNV Recommended Practices and time domain simulations in SIMO
(Master thesis, 2010)Offshore contractors seek to operate their remotely operated vehicles for the widest range of sea conditions where particularly launch and recovery through splash zone are critical phases in the offshore operation. The ... -
Leading Edge Erosion of Wind Turbine Blades: Effects of Environmental Parameters on Impact Velocities and Erosion Damage Rate
(Chapter, 2020)Leading edge erosion (LEE) of a wind turbine blade (WTB) is a complex phenomenon that contributes to high operation and maintenance costs. The impact between rain droplets and rotating blades exerts cyclic fatigue stresses ... -
Learning excursion sets of vector-valued Gaussian random fields for autonomous ocean sampling
(Journal article, 2021)Improving and optimizing oceanographic sampling is a crucial task for marine science and maritime resource management. Faced with limited resources in understanding processes in the water column, the combination of statistics ... -
Learning from failures in cruise ship industry: The blackout of Viking Sky in Hustadvika, Norway
(Peer reviewed; Journal article, 2021)This article brings to attention learning from the failure - blackout, loss of propulsion and near grounding - of Viking Sky cruise ship which occurred in Hustadvika, Norway, in March 2019. Failures and accidents in the ... -
Learning from failures: Accidents of marine structures on Norwegian continental shelf over 40 years time period
(Peer reviewed; Journal article, 2020)This paper investigates accidents, major accidents and disasters which occurred on the Norwegian Continental Shelf (NCS) over a period of more than 40 years time (1972-2013). An accident investigation based on the system ...