Blar i Institutt for marin teknikk på tittel
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Numerical simulations for lift-off operation of an offshore wind turbine monopile
(Master thesis, 2016)From this study, lift-off process of monopile in single crane vessel scenario and two vessels scenario are all considered. Challenges from environmental conditions and upending process are all cleared. In the single crane ... -
Numerical Simulations of Flow Around a Bluff Body, Using Multigrid and an Immersed Boundary Method
(Master thesis, 2017)Increase in computational efficiency is one of the most prominent factors for successful applications of large CFD models with many grid points. Consequences of the increase are reduction in CPU-time and memory usage, so ... -
Numerical Simulations of Flow around a Simplified Hull Form
(Master thesis, 2016)Hydrodynamic flow around a simplified hull form has been investigated using numerical simulations in OpenFOAM. The flow in question is three-dimensional and turbulent at a Reynolds number of 26,400. The base geometry is a ... -
Numerical simulations of massively separated turbulent flows
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:5, Doctoral thesis, 2010)It is well known that most fluid flows observed in nature or encountered in engineering applications are turbulent and involve separation. Fluid flows in turbines, diffusers and channels with sudden expansions are among ... -
Numerical Simulations of Offshore Towing of Floating Wind Turbines
(Master thesis, 2021)Denne masteroppgaven omhandler marine taue-operasjoner, med hovedvekt på taue-operasjonen til en Hywind Tampen flytende vindturbin. Hovedmålet med oppgaven er å sammenligne resultatene av det totale strekket i linen ved ... -
Numerical Simulations of Swimming Fish
(Master thesis, 2017)A profound understanding of how a fish swims may be used to design innovative propulsion units with higher efficiency than the conventional screw propellers. The gain of such understanding may be aided by the use of ... -
Numerical simulations of the flow around single and tandem circular cylinders close to a plane wall
(Doctoral thesis at NTNU;2016:43, Doctoral thesis, 2016)In order to model the turbulent flow around cylindrical structures in various configurations, Large Eddy Simulations (LES) are used in the present work. LES utilize a highly accurate model at reasonable time-consumption, ... -
Numerical Simulations of the Turret Mooring System for Knarr FPSO in Harsh Environment
(Master thesis, 2020)Abstract will be available on 2023-07-01 -
Numerical Simulations of Viscous Flow Around Stepped Circular Cylinder
(Master thesis, 2012)A stepped cylinder could be a desired design for an offshore buoy or SPAR platform. The geometry of a stepped cylinder consists of a small diameter cylinder (d) placed on top of a large diameter cylinder (D). This master ... -
Numerical solution of Navier Stokes by use of SPH
(Master thesis, 2010)Smoothed Particle Hydrodynamics is in many hydrodynamic problems a very suitable method, especially those with large deformations and free surfaces. Simulations of large impacts and multiphase flows may be a strong area ... -
A numerical solver for coupled dynamic simulation of glacial ice impacts considering hydrodynamic-ice-structure interaction
(Peer reviewed; Journal article, 2021)Glacial ice features pose great threats on the safety of ships and offshore structures in the arctic. House sized bergy bits or growlers are of particular concern because of the detection capability limits of marine radars. ... -
Numerical studies of viscous flow around bluff bodies
(Doctoral thesis at NTNU;2015:94, Doctoral thesis, 2015)A bluff body, i.e. an object with blunt rather than streamlined shape, exposed to external flow gives rise to a multitude of flow patterns depending on the timeand length-scales, the free-stream velocity, and the viscosity ... -
Numerical Studies of Viscous Flow Around Step Cylinders
(Doctoral theses at NTNU;2021:122, Doctoral thesis, 2021)A step cylinder consists of a small diameter cylinder (d) attached coaxially to a large diameter cylinder (D). Structures with a similar shape as the step cylinder have been extensively used in many marine engineering ap- ... -
Numerical studies of viscous flow around straight and curved tandem cylinders
(Doctoral theses at NTNU;2024:81, Doctoral thesis, 2024)The physics of flow around straight and curved cylinders in tandem is investigated by means of direct numerical simulations (DNS), for transitional and turbulent flow regimes. For straight tandem cylinders in the reattachment ... -
Numerical studies on wave forces and moored ship motions in intermediate and shallow water
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:238, Doctoral thesis, 2012)Wave forces and motions of a moored ship in intermediate and shallow water depth are investigated numerically in the present thesis. The studies are carried out in the framework of potential flow theory. Three numerical ... -
Numerical Study for Single Blade Installation of an Offshore Wind Turbine
(Master thesis, 2020)Markedet for havvind vokser samtidig som størrelsen på vindmøllene øker. Effektiviteten til en vindturbin påvirkes av turbinstørrelsen og stabile vindforhold. En følge av dette vil være flere installasjoner av vindmøller ... -
Numerical Study for Single Blade Installation of an Offshore Wind Turbine
(Master thesis, 2020)Markedet for havvind vokser samtidig som størrelsen på vindmøllene øker. Effektiviteten til en vindturbin påvirkes av turbinstørrelsen og stabile vindforhold. En følge av dette vil være flere installasjoner av vindmøller ... -
Numerical study of a novel procedure for installing the tower and Rotor Nacelle Assembly of offshore wind turbines based on the inverted pendulum principle
(Journal article; Peer reviewed, 2017)Current installation costs of offshore wind turbines (OWTs) are high and profit margins in the offshore wind energy sector are low, it is thus necessary to develop installation methods that are more efficient and practical. ... -
Numerical study of a well boat operating at a fish farm in current
(Journal article; Peer reviewed, 2019)Dynamic response of a well boat operating at a fish farm in current is investigated numerically. An objective is to determine the operational conditions of the well boat. In terms of the fish farm, a realistic set-up (with ... -
Numerical study of a well boat operating at a fish farm in long-crested irregular waves and current
(Journal article; Peer reviewed, 2019)The dynamic response of a coupled well boat–fish farm system in irregular long-crested waves and current is analyzed numerically in the time domain. The main purpose is to investigate the influence of the well boat on the ...