Browsing NTNU Open by Title
Now showing items 65114-65133 of 101211
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Numerical simulations of fluid flow and particle deposition in a cascade impactor
(Master thesis, 2022)Iceland Deep Drilling Project (IDDP) er et prosjekt som sikter seg inn på å forbedre prosessen og øke potensialet til geotermisk energi ved hjelp av varmeutvinning av fluider langt nede i jordskorpen. Disse fluidene har ... -
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 material mismatch and ductile crack growth
(Doktoravhandlinger ved NTNU, 1503-8181; 2002:13, Doctoral thesis, 2002)Both the global geometry and inhomogeneties in material properties will influence the fracture behaviour of structures in presence of cracks. In this thesis numerical simulations have been used to investigate how some ... -
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 Scattering of Light from Two-Dimensional Rough Surfaces Using the Reduced Rayleigh Equation
(Journal article; Peer reviewed, 2013)A formalism is introduced for the non-perturbative, purely numerical, solution of the reduced Rayleigh equation (RRE) for the scattering of light from two-dimensional penetrable rough surfaces. Implementation and performance ... -
Numerical Simulations of Shell-Side Two-Phase Flow in Spiral-Wound Heat Exchanger - for Natural Gas Liquefaction
(Master thesis, 2015)Heat transfer coefficients and pressure drop of evaporating heat exchangers such as the spiral wound heat exchanger depend on the distribution of the refrigerant fluid. However little open research is available in the study ... -
Numerical Simulations of Sloshing and the Thermodynamic Response Due to Mixing
(Journal article; Peer reviewed, 2017)In this paper, we apply computational fluid dynamics (CFD) to study the thermodynamic response enhanced by sloshing inside liquefied natural gas (LNG) fuel tanks. An existing numerical solver provided by OpenFOAM is used ... -
Numerical simulations of staged biomass grate fired combustion with an emphasis on NOx emissions
(Peer reviewed; Journal article, 2015)In the present paper NOx emissions from biomass combustion was studied, with the objective to demonstrate the applicability of stationary computational fluid dynamics simulations, including a detailed representation of the ... -
NUMERICAL SIMULATIONS OF SUBMERGED AND PRESSURISED X65 STEEL PIPES
(Chapter, 2013)While in service, pipelines may from time to time be exposed to impact loads from anchors or trawl gear. A lot of parameters influence the behaviour of the pipeline during impact, e.g. the diameter and thickness of the ... -
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 ... -
A Numerical Solution for Modelling Mooring Dynamics, Including Bending and Shearing Effects, Using a Geometrically Exact Beam Model
(Peer reviewed; Journal article, 2021)During the operation of moored, floating devices in the renewable energy sector, the tight coupling between the mooring system and floater motion results in snap load conditions. Before snap events occur, the mooring line ... -
Numerical solution of buoyancy-driven flow problems
(Master thesis, 2009)Numerical solution of buoyancy-driven flow problems in two spatial dimensions is presented. A high-order spectral method is applied for the spatial discretization, while the temporal discretization is done by operator ... -
Numerical solution of cahn-hilliard system by adaptive least-squares spectral element method
(Journal article, 2018)There is a growing interest in the phase-field approach to numerically handle the interface dynamics in multiphase flow phenomena because of its accuracy. The numerical solution of phase-field models has difficulties in ... -
Numerical solution of coupled fluid-thermal problems
(Master thesis, 2010)This study develops a numerical steady-state solutions to both buoyancy driven and surface tension driven flow problems in two spatial dimensions. A high-order spectral method is ap- plied for the spatial discretization, ... -
Numerical Solution of Equilibrium Equations of Spatial Elastica
(Master thesis, 2013)The goal of the thesis was to simulate numerically some equilibrium equationsof spatial elastica, where the equations simulate an elastic rod that has been de-formed. The equations are taken from the article ?Analytical ... -
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 ... -
Numerical solution of non-local PDEs arising in Finance.
(Master thesis, 2009)It is a well known fact that the value of an option on an asset following a Levy jump-process, can be found by solving a Partial Integro-Differential Equation (PIDE). In this project, two new schemes are presented to solve ...