Spherical perfectly matched absorber for finitevolume 3-D domain truncation

Abstract – Different implementations of planar per-fectly matched absorbers are studied under the unified framework of the Finite-Volume Time-Domain (FVTD) method. This comparative analysis allows to discuss the similarities existing between the theoretical models and explores the differences in their practical implementation and numerical performance in the framework of the FVTD method. Numerical experiments for performance analysis of the different PML models are conducted in terms of discretization and angle of incidence using waveguide models. The results are compared to theoreti-cally expected values and to the first-order Silver Müller absorbing boundary condition. I