An analytical and numerical study of axisymmetric flow around spheroids
Journal
Journal of Fluid Mechanics
Journal Volume
234
Pages
219-246
Date Issued
1992
Author(s)
Abstract
We investigate resonant cavitylike modes in dielectric photonic crystals made of collections of subwavelength cylinders with high permittivity. A large number of collective modes appear for TE polarization (where magnetic fields are oriented along the cylinder axis), which possess similar features of resonant cavity modes that occur in polaritonic structures. These modes are dispersionless in nature and intensively gathered around an asymptotic frequency that depends on the subwavelength cylinders. The typical resonant cavitylike modes are illustrated with the magnetic field distributions at the resonant frequencies. In particular, the field pattern in the building block shows a close resemblance to TEnm mode of an isolated waveguide. The respective cutoff frequency at large oscillation orders serves as the asymptotic frequency of resonant cavitylike modes. © 2009 The American Physical Society.
SDGs
Other Subjects
Axisymmetric Flow; Bodies-Ellipsoids; Modelling-Mathematical; Spheroids
Type
journal article