Title :
Transient scattering using finite elements with curved absorbing boundaries
Author_Institution :
Ansys Inc., Houston, PA, USA
fDate :
5/1/1996 12:00:00 AM
Abstract :
We present a time-domain solution to 2D TM/TE electromagnetic scattering problems using the finite element method. We implement Barry-Bielak-MacCamy (BBM) time and space local absorbing conditions (proposed in 1988) on a curved convex truncated domain boundary. The BBM boundary conditions, which encompass the popular Bayliss-Turkle mode annihilating boundary conditions and Kriegsmann on-surface boundary conditions, yield symmetric second order systems, which are then integrated using Newmark´s schemes. Numerical examples are provided and validated against published data. The method can be in principle extended to 3D transient scattering
Keywords :
electromagnetic wave absorption; electromagnetic wave scattering; finite element analysis; time-domain analysis; 2D TM/TE electromagnetic scattering problems; 3D transient scattering; BBM boundary conditions; Barry-Bielak-MacCamy local absorbing conditions; Bayliss-Turkle mode annihilating boundary conditions; Kriegsmann on-surface boundary conditions; Newmark´s schemes; curved absorbing boundaries; curved convex truncated domain boundary; finite element method; finite elements; symmetric second order systems; time-domain solution; Boundary conditions; Electromagnetic reflection; Electromagnetic scattering; Electromagnetic transients; Finite element methods; Frequency domain analysis; Integral equations; Tellurium; Tensile stress; Time domain analysis;
Journal_Title :
Magnetics, IEEE Transactions on
