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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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