Blar i Institutt for fysikk på emneord "Teknisk fysikk"
Viser treff 21-40 av 55
-
Fracturing of Optimal Paths in a Random Lattice
(Master thesis, 2011)The subject of this thesis is the study of the creation of fault lines in a random lattice, provoked by the successive failure of optimal paths. Using the recently developed Optimal Path Cracked model, we investigate how ... -
Gold and Platinum Surface Nanostructures on Highly Oriented Pyrolytic Graphite
(Master thesis, 2012)Self-assembled platinum and gold nanostructures, which are formed by evaporation and subsequent diffusion limited aggregation of metal on highly oriented pyrolytic graphite, have been studied by photoemission spectroscopy ... -
Hyperbolic Conservation Laws with Relaxation Terms: A Theoretical and Numerical Study
(Master thesis, 2011)Hyperbolic relaxation systems is an active field of research, with a largenumber of applications in physical modeling. Examples include modelsfor traffic flow, kinetic theory and fluid mechanics. This master s thesis is ... -
Maximum Entropy and Maximum Entropy Production in Macroecology
(Master thesis, 2011)The Maximum Entropy Theory of Ecology (METE), developed by John Harte, presents an entirely new method of making inferences in ecology. The method is based on the established mathematical procedure of Maximum Information ... -
Measurements of Young's Modulus on Rock Samples at Small Amplitude and Low Frequency: RockHard Deformations
(Master thesis, 2011)This thesis describes a new instrumental approach designed to measure the complex Young s modulus on cylindrical samples 1 inch in diameter 2 inch long and typically in the range of 1-70 GPa. Excitation frequencies are ... -
Minimum Ignition Energy in a Hygrogen Combustible Mixture
(Master thesis, 2011)In this thesis the Minimum Ignition Energy, in a hydrogen-air system, is studied by Direct Numerical Simulations (DNS) in a program called the Pencil Code. The heat source used to achieve ignition is modeled by a Gaussian ... -
Nonlinear Laser-induced Deformations and Forces at Liquid-Liquid Interfaces near the critical Point.
(Master thesis, 2011)The theory of laser-induced liquid-liquid interface deformation has been presented and used to derive a differential equation describing the shape of the deformation. The differential equation has been investigated and ... -
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 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 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 ... -
On the Design of Accurate Spatial and Temporal Temperature Measurements in Sea Ice
(Master thesis, 2012)Studies on sea ice have become increasingly popular among researchers in the last decades, due to its effect on the global climate and the challenges it presents for arctic engineering. The research is in demand of reliable ... -
Organic Contaminations in Sub-Marine AC and DC High-Voltage Cables
(Master thesis, 2012)In dielectric insulating materials subjected to alternating electric fields there are energy losses associated with polarization mechanisms and resistivity. A typical dielectric material used for insulation of high voltage ... -
Planetary Wave Oscillations observed in Ozone and Temperature Data from Antarctica during 2009
(Master thesis, 2011)Ozone and temperature data from Troll and Rothera research stations has been analyzed in order to trace planetary waves. Seasonal variations were removed and spectral analysis was performed in order to find dominating ... -
Positive Partial Transpose States in Multipartite Quantum Systems
(Master thesis, 2012)In this master thesis I study the extremal positive partial transpose (PPT) states of the three qubit $(2times2times2)$ system using numerical methods. Using two algorithms which locate PPT states of a specified rank and ... -
Precipitate Structure Changes during Overaging in an Al-Mg-Si Alloy
(Master thesis, 2012)Starting from a super saturated solid solution and two different conditions withβ′′ precipitates (T6) an Al-Mg-Si alloy was heat treated at 200◦C and investigated byhardness measurements. One of the T6 conditions was ... -
Prediction of seakeeping abilities for the free-fall lifeboat FF1200
(Master thesis, 2012)In this thesis we have investigated seakeeping properties of Star CCM+. Star CCM+ is hoped to be used for simulations of the initial sailing phase of UMOE Schat Harding's new free fall lifeboat FF1200. It is a critical ... -
Pump-probe experiments of multicrystalline silicon for solar cell applications
(Master thesis, 2012)In order to make cost effective solar cells from mc-Si materials, the negative contributions from defects and impurities should be reduced. The analysis of the photogenerated carrier properties is therefore of great ... -
Quantitative (S)TEM analysis of intermediate band solar cell materials
(Master thesis, 2011)In this thesis the strain properties of two InAs/GaAs quantum dot intermediate band solar cell materials have been explored. Both samples were thin films grown on a (100) GaAs substrate. The quantum dot material was InAs, ... -
Radiative corrections to van der Waals interaction in fluids
(Master thesis, 2012)The van der Waals interaction energy is derived for a homogenous fluid of polarizable particles. Low-temperature corrections to the van der Waals interaction energy are computed numerically for three cases: Dilute media ... -
Reconstruction of Images From a Compact Spectral Camera
(Master thesis, 2011)Hyperspectral imaging provides a lot of information about the imaged scene, and has several applications. The purpose of this work is to reconstruct hyperspectral images from pictures captured with a compact hyperspectral ...