Title :
Overlap Algorithm for the Nonstandard FDTD Method Using Nonuniform Mesh
Author :
Ohtani, Tadao ; Taguchi, Kenji ; Kashiwa, Tatsuya ; Kanai, Yasushi
Author_Institution :
Mitsubishi Heavy Industries, Ltd, Nagoya
fDate :
4/1/2007 12:00:00 AM
Abstract :
In this paper, the overlap algorithm is applied to the nonstandard finite-difference time-domain (NS-FDTD) method using a nonuniform mesh in a 2-D space. The characteristics of the overlap algorithm are numerically examined and compared with a no overlap algorithm. The results show that the reflection rate from the interface of the two meshes using the overlap algorithm is less than -80 dB, which is smaller than that of the NS-FDTD method without the overlap. Consequently, it is shown that the overlap algorithm is more suitable for the NS-FDTD method when using a nonuniform mesh. The overlap algorithm is successfully applied to the analysis of a dielectric flat panel and a corrugated surface
Keywords :
dielectric materials; finite difference time-domain analysis; dielectric flat panel; finite-difference time-domain method; nonstandard FDTD method; nonuniform mesh; overlap algorithm; surface corrugation; Aerospace industry; Algorithm design and analysis; Corrugated surfaces; Dielectrics; Educational institutions; Finite difference methods; Numerical analysis; Reflection; Space technology; Time domain analysis; Finite-difference time-domain (FDTD) method; nonstandard finite-difference time-domain (NS-FDTD) method; nonuniform mesh; numerical analysis; scattering;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2007.891003
