Iterative solvers for T-matrix and Discrete-Sources Methods
V. Schmidt*,1, R. Schuh1 and T. Wriedt2
- 1 University of Bremen, Badgasteiner Str. 3, 28359 Bremen, Germany.
- 2 Institute für Werkstofftechnik, Badgasteiner Str. 3, 28359 Bremen, Germany.
The different iterative approaches (GMRES, MINRES, BiCGStab, BiCGStab(2)) to solve linear systems in scattering problems based on surface-integral-equation methods (Discrete- Sources Method, T-matrix) are compared. The case where the kernel matrix is relatively small but ill-conditioned is considered. Different preconditioning techniques (diagonal, block- diagonal preconditioning matrix) are also compared.
- * Corresponding author