Title :
PML-FDTD in cylindrical and spherical grids
Author :
Teixeira, F.L. ; Chew, W.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
fDate :
9/1/1997 12:00:00 AM
Abstract :
Perfectly matched layers (PMLs) are derived for cylindrical and spherical finite-difference time-domain (FDTD) grids. The formulation relies on the complex coordinate stretching approach. Two-dimensional (2-D) cylindrical and three-dimensional (3-D) spherical staggered-grid FDTD codes are written based on the time-domain versions of the equations. Numerical simulations validate the formulation by showing very good agreement between the perfectly matched layer-finite-difference time-domain (FDTD) results and the free-space analytic solutions
Keywords :
Maxwell equations; electromagnetic wave absorption; finite difference time-domain analysis; PML-FDTD; complex coordinate stretching approach; cylindrical grids; finite-difference time-domain grids; perfectly matched layers; spherical grids; Closed-form solution; Finite difference methods; Helium; Impedance matching; Maxwell equations; Numerical simulation; Perfectly matched layers; Tellurium; Time domain analysis; Two dimensional displays;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
