Generalized impedance boundary conditions for thin dielectric coatings with variable thickness

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Aslanyürek B., Haddar H., Şahintürk H.

WAVE MOTION, cilt.48, sa.7, ss.681-700, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 7
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.wavemoti.2011.06.002
  • Dergi Adı: WAVE MOTION
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.681-700
  • Anahtar Kelimeler: Scattering problems, Electromagnetism, Asymptotic models, Generalized impedance boundary conditions, GIBC Thin coatings, SCATTERING, DOMAIN, WAVES
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

We derive the so-called Generalized Impedance Boundary Conditions (GIBC) that model thin dielectric coatings with variable width located on a perfect electric or magnetic conducting surface. We treat the 2-D electromagnetic problem for both TM and TE polarizations. The expressions of the GIBCs are obtained up to the third order (with respect to the coating width). The order of convergence is numerically validated through various numerical examples using a finite element type method. Particular attention is given to the cases where the inner boundary has corner singularities. (C) 2011 Elsevier B.V. All rights reserved.

We derive the so-called Generalized Impedance Boundary Conditions (GIBC) that model thin dielectric coatings with variable width located on a perfect electric or magnetic conducting surface. We treat the 2-D electromagnetic problem for both TM and TE polarizations. The expressions of the GIBCs are obtained up to the third order (with respect to the coating width). The order of convergence is numerically validated through various numerical examples using a finite element type method. Particular attention is given to the cases where the inner boundary has corner singularities.