Title :
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
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;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249441
