Sökning: "numerisk analys"
Visar resultat 6 - 10 av 445 avhandlingar innehållade orden numerisk analys.
6. Multi-scale methods for wave propagation in heterogeneous media
Sammanfattning : Multi-scale wave propagation problems are computationally costly to solve by traditional techniques because the smallest scales must be represented over a domain determined by the largest scales of the problem. We have developed new numerical methods for multi-scale wave propagation in the framework of heterogeneous multi-scale methods. LÄS MER
7. High performance adaptive finite element methods for turbulent fluid flow
Sammanfattning : Understanding the mechanics of turbulent fluid flow is of key importance for industry and society as for example in aerodynamics and aero-acoustics. The massive computational cost for resolving all turbulent scales in a realistic problem makes direct numerical simulation of the underlying Navier-Stokes equations impossible. LÄS MER
8. Numerical algorithms for high dimensional integration with application to machine learning and molecular dynamics
Sammanfattning : This thesis contains results on high dimensional integration with two papers, paper I and paper II, presenting applications in machine learning and two papers, paper III and paper IV, presenting applications to molecular dynamics.In paper I we present algorithms based on a Metropolis test for training shallow neural networks with trigonometric activation functions. LÄS MER
9. Compressible Turbulent Flows : LES and Embedded Boundary Methods
Sammanfattning : .... LÄS MER
10. Analysis and numerical methods for multiscale problems in magnetization dynamics
Sammanfattning : This thesis investigates a multiscale version of the Landau-Lifshitz equation and how to solve it using the framework of Heterogeneous Multiscale Methods (HMM). The Landau-Lifshitz equation is the governing equation in micromagnetics, modeling magnetization dynamics. LÄS MER
