Efficient iterative methods for multi-frequency wave propagation problems: A comparison study

Efficient iterative methods for multi-frequency wave propagation problems: A comparison study

In this paper we present a comparison study for three different iterative Krylov methods that we have recently developed for the simultaneous numerical solution of wave propagation problems at multiple frequencies. The three approaches have in common that they require the application of a single shift-and-invert preconditioner at a suitable seed frequency. The focus of the present work, however...

A Class of Robust and Efficient Iterative Methods for Wave Scattering Problems

Iterative Methods for Equilibrium Problems, Variational Inequalities and Fixed Points

Ela Error Propagation Formula of Multi-level Iterative Aggregation-disaggregation Methods for Non-symmetric Problems

Iterative aggregation-disaggregation methods for numerical computing of stationary probability distribution vectors of stochastic matrices are studied. The methods can use arbitrary numbers of levels and of smoothing steps. A formula for the error propagation is derived. Using this formula, some asymptotic convergence properties of these methods for non-symmetric problems are demonstrated.

High-frequency / Short Pulse Methods for Wave Propagation

High frequency / short pulse wave propagation modeling and simulation strategies will be reviewed in this presentation invited for the special session honoring Prof. Leopold B. Felsen on his 80 birthday. INTRODUCTION Narrow and broad band wave propagation either natural or man-made environments are of interest for many decades, since the success and quality of any communication depends directly...