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 2016-08, Vol.26 (8), p.553-555
Main Authors: Cabello, Miguel R., Angulo, Luis D., Alvarez, J., Bretones, A. Rubio, Gutierrez, Guadalupe G., Garcia, Salvador G.
Format: Article
Language:English
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.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2016.2588579