Browsing Fakultet for naturvitenskap (NV) by Title
Now showing items 7864-7883 of 12453
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Numerical modelling of a Czochralski furnace with active cooling jacket - Optimization of quality and througput
(Master thesis, 2015)In the single crystal silicon Czochlarski process, pull rate has a great impact on its production. More and more people put their eyes on optimizing the structure of Cz furnace to increase the pull rate, but experiments ... -
Numerical modelling of distinct ice lenses in frost heave
(Peer reviewed; Journal article, 2021)Frost heave happens when three conditions coincide: the temperature is below the normal freezing point of bulk water, the sub-cooled water is connected to a water reservoir, and the mechanical conditions of the soil allows ... -
Numerical modelling of marine icing on offshore structures and vessels
(Master thesis, 2012)A numerical model for predicting icing on offshore structures and vessels has been developed and implemented. The model calculates the icing caused by freezing sea spray, and focuses on two distinct sources of spray - spray ... -
Numerical Modelling of the Optical Properties of Truncated and Coated Prolate Spheroidal Nanoparticles
(Master thesis, 2013)The optical properties of an island film of truncated and coated prolate spheroidal particles are studied numerically by implementing support for this island geometry in the GranFilm software. The underlying theory of the ... -
Numerical Models for Jump Diffusion Processes: A Finite Element Approach
(Master thesis, 2013)In this thesis we propose a finite element solution to the jump diffusion problem for pricing options. We focus on assets following CGMY processes and formulate the problem in weak bilinear form. In the case where the CGMY ... -
Numerical simulation of bubble growth in a supersaturated solution
(Journal article; Peer reviewed, 2020)In this paper, a Volume of Fluid (VOF) based approach to simulate the growth of a pre-existing bubble in a supersaturated solution is developed and implemented in OpenFOAMⓇ. The model incorporates the Compressive Continuous ... -
Numerical simulation of continuum scale electrochemical hydrogen bubble evolution
(Peer reviewed; Journal article, 2021)One of the important aspects in improving the efficiency of electrochemical processes, such as water electrolysis, is the efficient removal of bubbles which evolve from the electrodes. Numerical modelling based on Computational ... -
Numerical Simulations of Flow Past a Truss Tower with an Evaluation of Tower Shadow Models for Wind Turbines
(Master thesis, 2011)The performance of steady-state tower shadow models for a wind turbine truss tower have been evaluated. The Reynolds-Averaged-Navier-Stokes (RANS) approach, in conjunction with the $k-omega$ Shear-Stress-Transport (SST) ... -
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 Solution of Stochastic Differential Equations by use of Path Integration: A study of a stochastic Lotka-Volterra model
(Master thesis, 2011)Some theory of real and stochastic analysis in order to introduce the Path Integration method in terms of stochastic operators. A theorem presenting sufficient conditions for convergence of the Path Integration method is ... -
Numerical studies of Supernova Remnants
(Master thesis, 2013)Supernovae are very luminous events, on the scale of entire galaxies, and deposit mass and large amounts of energy in to the surrounding interstellar medium. In this workthe effect of a supernova on the surrounding medium ... -
Numerical studies of the scattering of light from a two-dimensional randomly rough interface between two dielectric media
(Journal article; Peer reviewed, 2016)The scattering of polarized light incident from one dielectric medium on its two-dimensional randomly rough interface with a second dielectric medium is studied. A reduced Rayleigh equation for the scattering amplitudes ... -
Numerical studies of the transmission of light through a two-dimensional randomly rough interface
(Journal article; Peer reviewed, 2017)The transmission of polarized light through a two-dimensional randomly rough interface between two dielectric media has been much less studied, by any approach, than the reflection of light from such an interface. We have ... -
Numerical Study of Mass Transfer Limitations in a Bioreactor Operated in the Heterogeneous Flow Regime
(Master thesis, 2017)With the increased focus on detaining a more environmental friendly industry, biological processes have been given more attention over the last years. Such a biological process is single cell protein (SCP) production, ... -
Numerical study of the droplet-interface dynamic related to liquid-liquid separators
(Master thesis, 2013)The CFD package OpenFoam with the VOF approach of the interFoam solver is used to simulate water drops in Exxsol D80 oil, with diameter ranging from 100 micrometer to 1000 micrometer. Parasitic currents are caused by the ... -
Numerical Study of the Interaction of Flow over Two Airfoils in Relative Motion
(Master thesis, 2011)Computational fluid dynamics (CFD) was be used to investigate aspects of interaction of flow over two airfoils in relatie motion in detail.%Problem statement2D tandem airfoil setups were studied, where the leading airfoil ... -
Numerisk modellering av noe kvantesystemer
(Master thesis, 2016)Denne avhandlingen har rapportert gjerninger gjort over mange år, samle notater og programmer fra ulike stadier av utviklingen. For dette årsaken kan det inneholde noe utilsiktet repetisjon av innhold, og (Like utilsiktet) ... -
Numerisk modellering av tilbakeglødingsoppførsel i utvalgte aluminiumslegeringer
(Master thesis, 2011)I denne rapporten er det tatt for seg modellering av mykningsreaksjoner etter deformasjon for AA1200- og AA3103-legeringer. Grunnleggende teori rundt mykningsreaksjonene for disse legeringene er presentert. Det er hentet ... -
Numeriske metoder og programmering i fysikk 1
(Master thesis, 2023)Med fagfornyelsen ble det vedtatt at norske fysikkelever skal arbeide mer digitalt. Denne digitaliseringen kommer spesielt til syne i fysikk 1 gjennom kompetansemålet: «… eleven skal kunne bruke numeriske metoder og ... -
Nutrient (C, N and P) budgets of Hediste diversicolor (OF Müller, 1776) fed salmon smolt sludge
(Master thesis, 2022)Norge er verdens største produsent av atlantisk laks (Salmo salar), med en årlig produksjon på omtrent 1.3 millioner tonn. Med matproduksjon på denne skalaen oppstår det store mengder med næringsforurensning i form av ...