FDEM v. 3.0

Abstract

Program FDEM_v3.0 is designed to simulate three-dimensional (3D) electromagnetic (EM) wave propagation within an isotropic and heterogeneous body. The medium is characterized by the three isotropic (but spatially-variable) parameters electric permittivity, magnetic permeability, and current conductivity. The numerical solution methodology is explicit, time-domain, finite-differencing of the EH (i.e., electric vector – magnetic vector) coupled partial differential system on uniform, but staggered, spatial and temporal grids. In order to suppress grid boundary reflections, FDEM_v3.0 implements “perfectly matched layer” (PML) absorbing boundary conditions on all flanks of the 3D spatial grid in a memory efficient manner.