Conformal hybrid finite difference time domain and finite volume time domain

Author

Yee, Kane S. ; Chen, Jei S.

Author_Institution

Lockheed Palo Alto Res. Lab., CA, USA

Volume

42

Issue

10

fYear

1994

fDate

10/1/1994 12:00:00 AM

Firstpage

1450

Lastpage

1455

Abstract

A hybrid method that combines the finite difference time domain (FDTD) and the finite volume time domain (FVTD) methods is presented. The FVTD, based on a conformal and unstructured grid is used in the near vicinity of the surface of a scatterer, and the FDTD is used to model the fields in the surrounding area. The two are coupled together through interpolation. The vertex-based FVTD allows for more convenient and accurate interpolations than a conformal FDTD method. The hybrid method is validated through two examples-the scattering by a PEC cube and sphere-by comparison with the direct FDTD solution, and with an exact Mei series solution for the spherical case

Keywords

Maxwell equations; electromagnetic wave scattering; finite difference methods; finite difference time-domain analysis; interpolation; FDTD; FVTD; Mei series solution; PEC cube; conformal unstructured grid; finite difference time domain; finite volume time domain; hybrid method; interpolation; scatterer; sphere; Antennas and propagation; Apertures; Electromagnetic fields; Electromagnetic propagation; Electromagnetic scattering; Finite difference methods; Integral equations; Interpolation; Notice of Violation; Time domain analysis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.320754

Filename

320754