Journal of Computational Physics
Fast and Efficient Algorithms in Computational Electromagnetics
Fast and Efficient Algorithms in Computational Electromagnetics
SIAM Journal on Scientific Computing
Symmetric Coupling for Eddy Current Problems
SIAM Journal on Numerical Analysis
Coupling of Finite Elements and Boundary Elements in Electromagnetic Scattering
SIAM Journal on Numerical Analysis
Journal of Computational Physics
Hi-index | 31.45 |
This paper presents a symmetric FEM-BEM formulation for solving unbounded three-dimensional electromagnetic problems. The approach is based on domain decomposition method that decomposes original problem into FEM and BEM domains. Two domains communicate through Robin transmission condition enforced on the interface between these two domains. The meshes on the interface are non-matching (non-conformal), thus two domains can be modularly treated. The resulting system matrix is symmetric and free of internal resonances. To accelerate the convergence of iterative solvers, three Schwarz type preconditioners are proposed. An ad hoc proof of convergence for the proposed Robin interface between FEM and BEM is also included for spherical outer boundaries. The efficiency and performance of the proposed approach with three different preconditioners are demonstrated through a few numerical examples.