Now showing items 121-130 of 288
Still Water Performance Simulation of a SWATH Wind Turbine Service Vessel
(The University of Bergen, 2012-11-20)
In this thesis I am making a computational fluid dynamics(CFD) simulation of a SWATH (Small Waterplane Area Twin Hull) wind turbine service vessel moving in still water at different speeds by using the CFD tool STAR-CCM+. ...
Sequestration of Carbon in Saline Aquifers Mathematical and Numerical Analysis
(The University of Bergen, 2004-04-30)
The work in this thesis focuses equally on two main topics. The first of these subjects deals with development of criteria for monotonicity of con- trol volume methods. These methods are important and frequently used ...
Modelling Fluid Flow and Heat Transport in Fractured Porous Media
(The University of Bergen, 2013-08-27)
Flow in porous media is an important and well- researched topic in both academia and the industry. More accurate mathematical models are constantly sought after. Fractures in a porous medium can be an important cont ...
Linear and Nonlinear Convection in Porous Media between Coaxial Cylinders
(The University of Bergen, 2011-05-02)
In this thesis we develop a mathematical model for describing three-dimensional natural convection in porous media filling a vertical annular cylinder. We apply a linear stability analysis to determine the onset of convection ...
Estimering av permeabilitet med bruk av adaptiv parameterisering
(The University of Bergen, 2009-07-17)
The impact of local-scale processes on large-scale CO2 migration and immobilization
Storage security of injected carbon dioxide (CO2) is an essential component of risk management for geological carbon sequestration operations. During the injection and early post-injection periods, CO2 leakage may occur ...
Finite-Element Modelling of Buoyancy-Driven Flow in Natural Geothermal Systems
(The University of Bergen, 2010-05-27)
Finite element modelling of buoyancy driven flow in geothermal systems is presented in this thesis. The main focus is on the development of a numerical modelling tool. The program developed is tested for classical benchmarks ...
Controllability on Infinite-Dimensional Manifolds: A Chow-Rashevsky Theorem
One of the fundamental problems in control theory is that of controllability, the question of whether one can drive the system from one point to another with a given class of controls. A classical result in geometric control ...
A Lanczos-view on Independent Component Analysis of fMRI Data
(The University of Bergen, 2010-06-04)
Analysis of resting-state fMRI data is commonly done by a combination of the two signal processing methods Principal Component Analysis (PCA) and Independent Component analysis (ICA). In this thesis, a possible error ...