Nondiagonally anisotropic PML : a generalized unsplit wide-angle absorber for the treatment of the near-grazing effect in FDTD meshes

 
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Conference article (EN)
Scientific article (EN)
2000 (EN)
Nondiagonally anisotropic PML : a generalized unsplit wide-angle absorber for the treatment of the near-grazing effect in FDTD meshes
Yioultsis, Traianos
Tsiboukis, Theodoros
Kosmanis, Theodoros
Kantartzis, Nikolaos
Δημοσιεύσεις μελών--ΣΤΕΦ--Τμήμα Οχημάτων, 2000
A new generalization of the PML with wide-angle absorption is presented, for the efficient truncation of FDTD lattices. The proposed unsplit-field layer uses a nondiagonal symmetric tensor anisotropy and via an appropriate parameter selection achieves notable attenuation rates in the case of near-grazing angles. Hence, it can be placed much closer to large structures. Improved accuracy and lower dispersion errors are attained via higher-order FDTD schemes with regular and non-Cartesian lattices constructed by hexagonal or tetradecahedral cells. Finally, Ramahi ABC's are invoked for the absorber's termination. Numerical results, addressing wave attenuation at grazing incidence, prove the efficiency of the proposed PML Nondiagonally anisotropic PML: A generalized unsplit wide-angle absorber for the treatment of the near-grazing effect in FDTD meshes (PDF Download Available). Available from: http://www.researchgate.net/publication/3101799_Nondiagonally_anisotropic_PML_A_generalized_unsplit_wide-angle_absorber_for_the_treatment_of_the_near-grazing_effect_in_FDTD_meshes [accessed Jul 2, 2015].
Άλλο
other
Conference article
Other
FDTD μέθοδος
Perfectly matched layers (Mathematical physics)
Ηλεκτρομαγνητικά κύματα—Μετάδοση
FDTD method
Ρεύματα, Ηλεκτρικά
Ανισοτροπικοί κρύσταλλοι
Δείκτης διάθλασης, Αρνητικός
PMLs (Μαθηματική φυσική)
Απόλυτη αντιστοιχία επιπέδων (Μαθηματική φυσική)
Διαφορικές εξισώσεις, Μερικές—Αριθμητικές λύσεις
Meta materials
Ανάλυση στο πεδίο του χρόνου
Numerical solutions (Numerical analysis)
Anisotropic crystals
Negative refractive index
Time domain analysis
Αριθμητικές λύσεις (Αριθμητική ανάλυση)
Metamaterials
Anisotropy—Mathematical models
Ανισοτροπία—Μαθηματικά μοντέλα
Currents, Electric
Μεταϋλικά
Electromagnetic waves—Transmission
Differential equations, Partial—Numerical solutions
Μετά-υλικά
Finite differences
Πεπερασμένες διαφορές
Refractive index, Negative
PMLs (Mathematical physics)
Αρνητικός δείκτης διάθλασης
ATEI of Thessaloniki
Eureka! Insitutional Repository
Σχολή Τεχνολογικών Εφαρμογών - Τμήμα Μηχανολόγων Οχημάτων
English
2000-07
10.1109/20.877590
http://www.researchgate.net/publication/3101799_Nondiagonally_anisotropic_PML_A_generalized_unsplit_wide-angle_absorber_for_the_treatment_of_the_near-grazing_effect_in_FDTD_meshes
Journal: IEEE Transactions on Magnetics, vol. 36, no. 4
Kosmanis, T,. Tsiboukis, T., Kantartzis, N., Yioultsis, T, ([χ.χ.]). A Perfectly Matched Anisotropic Layer for the Numerical Analysis of Unbounded Eddy Current Problems. IEEE TRANSACTIONS ON MAGNETICS 36. Διαθέσιμο σε: http://www.researchgate.net/publication/3101799_Nondiagonally_anisotropic_PML_A_generalized_unsplit_wide-angle_absorber_for_the_treatment_of_the_near-grazing_effect_in_FDTD_meshes (Ανακτήθηκε 2 Ιουλίου 2015)
0018-9464
http://195.251.240.227/jspui/handle/123456789/10345
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