Sökning: "Analytic element method"
Visar resultat 1 - 5 av 13 avhandlingar innehållade orden Analytic element method.
1. Analytic Element Models for Groundwater Flow and Linear Elasticity in Fractured Rocks
Sammanfattning : There is an increasing demand for using deep underground space at various scales, such as small-scale geothermal wells and large-scale projects like tunnels or nuclear waste disposal. The deep underground space in fractured rock is a heterogeneous and challenging medium. LÄS MER
2. Inverse and optimization problems in electromagnetics -- a finite-element method perspective
Sammanfattning : In this thesis, a selection of inverse and optimization problems are studied where the finite element method (FEM) serves as a comprehensive tool to solve electromagnetic field problems that lack an analytic solution. The inverse problems are typically formulated in terms of an optimization problem where the misfit between a measurement and the corresponding result of a computational model is minimized. LÄS MER
3. Finite element approximation of the linear stochastic Cahn-Hilliard equation
Sammanfattning : The linearized Cahn-Hilliard-Cook equation is discretized in the spatial variables by a standard finite element method. Strong convergence estimates are proved under suitable assumptions on the covariance operator of the Wiener process, which is driving the equation. The backward Euler time stepping is also studied. LÄS MER
4. Simulation of Electro-Optic Modulators by a Time-Domain Beam-Propagation Method
Sammanfattning : Electro-optic modulators (EOMs) are components which convert electric signals to optical ones. They are needed, e.g., at the transmitter end of fiber-optic communication systems and in time-stretch analog-to-digital converters. LÄS MER
5. Electromagnetic modeling using the partial element equivalent circuit method
Sammanfattning : This thesis presents contributions within the field of numerical simulations of electromagnetic properties using the Partial Element Equivalent Circuit (PEEC) method. Numerical simulations of electromagnetic properties are of high industrial interest. LÄS MER