PML absorbing boundary condition for noncubic cell time-domain method

Author

Harada, Norihiko ; Hano, Mitsuo

Author_Institution

Dept. of Comput. Sci., Tokuyama Coll. of Technol., Japan

Volume

7

Issue

10

fYear

1997

fDate

10/1/1997 12:00:00 AM

Firstpage

335

Lastpage

337

Abstract

Conventional absorbing boundary conditions (ABC´s) are used for cubic-cell finite-difference time-domain (FDTD) grids, but not in noncubic cell time-domain grids. We propose an algorithm to apply perfectly matched layer (PML) ABC to the noncubic cell time-domain method. The numerical experiments are conducted on the accuracy of the PML in a regular triangle cell grid versus standard second-order Mur and PML ABC´s in a square-cell FDTD grid. The PML global error is about 10 ^-3 of the former and about three times of the latter. According to the convergent characteristics this algorithm is equivalent to that of applying PML ABC to the FDTD method

Keywords

Maxwell equations; convergence of numerical methods; electromagnetic wave absorption; finite difference time-domain analysis; FDTD grids; PML ABC; PML absorbing boundary condition; PML global error; convergent characteristics; finite-difference time-domain grids; noncubic cell time-domain method; perfectly matched layer; regular triangle cell grid; square-cell FDTD grid; standard second-order Mur ABC; Boundary conditions; Finite difference methods; Finite element methods; Helium; Magnetic fields; Maxwell equations; Perfectly matched layers; Propagation losses; Shape; Time domain analysis;

fLanguage

English

Journal_Title

Microwave and Guided Wave Letters, IEEE

Publisher

ieee

ISSN

1051-8207

Type

jour

DOI

10.1109/75.631193

Filename

631193