Search for dissertations about: "rough coefficients"
Showing result 1 - 5 of 15 swedish dissertations containing the words rough coefficients.
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1. Numerical Methods for Darcy Flow Problems with Rough and Uncertain Data
Abstract : We address two computational challenges for numerical simulations of Darcy flow problems: rough and uncertain data. The rapidly varying and possibly high contrast permeability coefficient for the pressure equation in Darcy flow problems generally leads to irregular solutions, which in turn make standard solution techniques perform poorly. READ MORE
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2. Homogenization of some problems in hydrodynamic lubrication involving rough boundaries
Abstract : This thesis is devoted to the study of some homogenization problems with applications in lubrication theory. It consists of an introduction, five research papers (I–V) and a complementary appendix.Homogenization is a mathematical theory for studying differential equations with rapidly oscillating coefficients. READ MORE
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3. Modelling of Dynamic Contact - Exemplified on the Tyre/Road Interaction
Abstract : Noise is a severe problem in modern society. Road traffic noise is a substantial contributor and the tyre/road interaction is the main noise source for normal driving conditions. Despite more than 30 years of research, there is a lack of quantitative tyre/road noise prediction models. READ MORE
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4. Spectral properties of elliptic operators in singular settings and applications
Abstract : The present thesis is focused on the investigation of the spectral properties of the linear elliptic operators in the presence of singularities. It is divided into three chapters. In the first chapter, we consider geometric singularities. READ MORE
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5. Design and development of a microwave multifrequency polarimetric scatterometer for biosphere remote sensing
Abstract : Microwave radar and radiometer techniques are used to gather crucial information about the earth and its atmosphere. The ERS-1, JERS-1, RadarSAT and NASA’s Mission to Planet Earth projects are designed to study the changing global environment. In all these endeavors, the key instrument is the radar or scatterometer. READ MORE