Suppression of dispersion in FDTD solutions of Maxwell's equations
作者:
S. Castillo,
S. Omick,
期刊:
Journal of Electromagnetic Waves and Applications
(Taylor Available online 1994)
卷期:
Volume 8,
issue 9-10
页码: 1193-1221
ISSN:0920-5071
年代: 1994
DOI:10.1163/156939394X01000
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Yee's finite difference time-domain method is widely used for numerically solving Maxwell's equations. The Yee algorithm is numerically dispersive which limits its usefulness for modeling wide-band electromagnetic phenomena. In this paper, we describe the use of flux-corrected transport for suppressing the numerical dispersion associated with the Yee algorithm. Flux-corrected transport uses the computed results from a numerically dispersive finite-difference algorithm and a numerically diffusive finite-difference algorithm at each time step to arrive at a final solution. In this case, the dispersive algorithm used is the original Yee FDTD method. Results are given comparing the accuracy of the FDTD algorithm with flux-corrected transport versus the unmodified Yee algorithm for propagating pulsed-type plane waves in two dimensional scattering problems.
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