Browsing Institutt for marin teknikk by Title
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Numerical Simulation of Flow Around a Prolate Spheroid
(Master thesis, 2017)The concept of closed containment fish cages is promising when coping with sea lice and escaped fish challenges in the aquaculture industry. Unlike the traditional open net cages, the external flow caused by current and ... -
Numerical Simulation of Flow Around Remotely Operated Vehicle (ROV)
(Master thesis, 2012)Computational Fluid Dynamics (CFD) have been applied for numerical simulations of the flow around simplified shapes of a Remotely Operated Vehicle (ROV). The simulations have been carried out at Re = 850 000, which coincides ... -
Numerical Simulation of Flow around Single and Two side-by-side Square Cylinders with Horizontal Offsets Mounted on the Seafloor
(Master thesis, 2016)Computational Fluid Dynamics (CFD) have been applied to obtain essential hydrodynamic quantities and flow behaviors of single and two 2D wall-mounted square cylinders subjected to a uniform turbulent inflow. This is a ... -
NUMERICAL SIMULATION OF FLOW AROUND TWO SIDE-BY-SIDE RECTANGULAR CYLINDERS WITH VERTICAL AND HORIZONTAL OFFSETS
(Master thesis, 2015)Computational Fluid Dynamics (CFD) is a common tool when investigating the effects of flow around structures. In this thesis, I have used \textit{ANSYS ICEM CFD} (Analysis System Integrated Computer Engineering and ... -
Numerical Simulation of Free-Surface Waves past Two Semi-Submerged Horizontal Circular Cylinders in Tandem
(Journal article; Peer reviewed, 2017)Two-dimensional (2D) numerical simulations are performed to investigate free surface waves past two semi-submerged horizontal circular cylinders in tandem. The 2D simulations are carried out by solving the Unsteady ... -
Numerical Simulation of Fully Nonlinear Interaction Between Regular and Irregular Waves and a 2D Floating Body
(Chapter, 2019)A fully nonlinear Navier-Stokes/VOF numerical wave tank, developed within the open-source CFD toolbox OpenFOAM, is used to investigate the response of a moored 2D floating body to nonlinear wave loads. The waveDyMFoam ... -
Numerical Simulation of Installation of XL Monopile for Offshore Wind Turbines
(Master thesis, 2016)There has to be a significant increase in the share of power supplied by renewable energies to reduce global emission, simultaneously as the wealth is rising in the newly industrialized countries. Wind energy is one of the ... -
Numerical Simulation of Three-dimensional Viscous Flow around Marine Structures
(Doktoravhandlinger ved NTNU, 1503-8181; 2005:170, Doctoral thesis, 2005)The first part of the thesis covers the theoretical background for computational fluid dynamics; specifically, the incompressible Navier-Stokes equations. Some general solution methods are reviewed, as well as the most ... -
Numerical Simulation of Twin Nozzle Injectors
(Master thesis, 2015)Fuel injectors for marine applications have traditionally utilized nozzles with symmetric equispaced orifice configuration. But in light of the new marine emission legislations the twin nozzle concept has arisen. The twin ... -
Numerical simulation of viscous flow around a step cylinder
(Master thesis, 2018)Flow around a step cylinder at was investigated numerically with a diameter ratio of $D/d=2$ and Reynolds number $Re_D=600$. The open source software OpenFoam was used for the numerical simulations. The primary focus in ... -
Numerical simulation of viscous flow around inclined cicular cylinder
(Master thesis, 2017)The modern maritime engineering industry uses various types of structures in their fields. The single circular cylinder is the core and basic structure of the industry which is studied with numerical and experimental ... -
Numerical Simulation of Viscous Flow Past A Curved Cylinder
(Master thesis, 2018)In the present Master thesis three-dimensional viscous flow simulations of flow past a curved circular cylinder is investigated by utilization of the open source Computational Fluid Dynamics (CFD) code OpenFOAM. The focus ... -
Numerical Simulation of Viscous Shear Flow Around Tandem Cylinders
(Master thesis, 2018)The project, Coastal Highway E39, introduces the concept of Submerged Floating Tube Bridge (SFTB). The bridge is simplified as tandem cylinders with longitudinal length-diameter ratio L/D = 3.2, diameter D=1.0 and span-wise ... -
Numerical Simulations and Operational Assessment of Installation of Anchors for Floating Wind Turbines
(Master thesis, 2020)Ei av dei største utfordingane til forankringssystemet for flytande vindturbinar er installasjonen av ankera og den tilhøyrande kran-operasjonen. To forskjellige anker-konsept som kan brukast i forankringssystemet er det ... -
Numerical Simulations for Installation of Offshore Wind Turbine Monopiles Using Floating Vessels
(Chapter; Peer reviewed, 2013)Monopiles are the most commonly used support structures for offshore wind turbines with up to 40m water depth due to the simplicity of the structure. The installation of turbine support structures can be carried out by a ... -
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 ...