A Simplified Conformal (SC) Method for Modeling Curved Boundaries in FDTD Without Time Step Reduction

Author

Schuhmann, Rolf ; Zagorodnov, Igor A. ; Weiland, Thomas

Author_Institution

Fachgebiet Theor. Elektrotechnik, Univ. Paderborn

fYear

2006

fDate

11-16 June 2006

Firstpage

177

Lastpage

180

Abstract

A simplified conformal (SQ) approach for the FDTD method is introduced. Unlike previous methods it allows the accurate modeling of arbitrary interfaces in a Cartesian mesh without the need to reduce the maximum stable time step, and without the usage of extended operator stencils. SC is directly based on the correspondence between modified cells and the Courant time step, and can be easily implemented in existing conformal codes. The method is verified and compared to other approaches by means of several numerical examples

Keywords

Maxwell equations; computational electromagnetics; finite difference time-domain analysis; Cartesian mesh; Courant time step; FDTD method; conformal codes; curved boundary modeling; simplified conformal method; time step reduction; Convergence of numerical methods; Finite difference methods; Geometry; Integral equations; Intrusion detection; Magnetic domains; Maxwell equations; Symmetric matrices; Time domain analysis; Voltage; Convergence of numerical methods; FDTD methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2006. IEEE MTT-S International

Conference_Location

San Francisco, CA

ISSN

0149-645X

Print_ISBN

0-7803-9541-7

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2006.249441

Filename

4014851