Title :
A nonuniform cylindrical FDTD algorithm using new split PML formulations
Author :
Jiang Qi He ; Qing Huo Liu
Author_Institution :
Klipsch Sch. of Electr. & Commun. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
Based on a unified formulation, a new split formulation of perfectly matched layers (PML) and quasi-PML are presented. Numerical results of both schemes agree well with analytical solutions although the quasi-PML can be shown theoretically not perfectly matched. A nonuniform grid in cylindrical coordinates is used for the 3-D FDTD method. The new split formulation of PML is an important absorbing boundary condition (ABC) for spectral-domain methods such as the pseudospectral time domain (PSTD) method in cylindrical coordinates.
Keywords :
Maxwell equations; electromagnetic wave absorption; electromagnetic wave propagation; electromagnetic wave scattering; finite difference time-domain analysis; inhomogeneous media; spectral analysis; 3D FDTD method; EM wave propagation; EM wave scattering; Maxwell´s equation; absorbing boundary condition; borehole probing radar; cylindrical coordinates; inhomogeneous conductive media; nonuniform cylindrical FDTD algorithm; nonuniform grid; perfectly matched layers; pseudospectral time domain method; quasi-PML; spectral-domain methods; split PML formulations; time-stepping; Application software; Boundary conditions; Electromagnetic propagation; Electromagnetic scattering; Finite difference methods; Grid computing; Helium; Maxwell equations; Radar scattering; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1998. IEEE
Print_ISBN :
0-7803-4478-2
DOI :
10.1109/APS.1998.699208
