A New Efficient and Stable 3D Conformal FDTD

A novel conformal technique for the FDTD method, here referred to as Conformal Relaxed Dey-Mittra method, is proposed and assessed in this letter. This technique helps avoid local time-step restrictions caused by irregular cells, thereby improving the global stability criterion of the original Dey-M...

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Bibliographic Details
Published in:	IEEE microwave and wireless components letters Vol. 26; no. 8; pp. 553 - 555
Main Authors:	Cabello, Miguel R., Angulo, Luis D., Alvarez, J., Bretones, A. Rubio, Gutierrez, Guadalupe G., Garcia, Salvador G.
Format:	Journal Article
Language:	English
Published:	IEEE 01-08-2016
Subjects:	Computation Conformal techniques Constrictions Convergence Criteria Finite difference methods Finite difference time domain method finite-difference time domain Mathematical models Microwaves NASA Numerical stability radar cross section Spatial resolution Stability Stability criteria Time-domain analysis
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Summary:	A novel conformal technique for the FDTD method, here referred to as Conformal Relaxed Dey-Mittra method, is proposed and assessed in this letter. This technique helps avoid local time-step restrictions caused by irregular cells, thereby improving the global stability criterion of the original Dey-Mittra method. The approach retains a second-order spatial convergence. A numerical experiment based on the NASA almond has been chosen to show the improvement in accuracy and computational performance of the proposed method.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1531-1309 1558-1764
DOI:	10.1109/LMWC.2016.2588579