Summary
URSI Commission B 2013 International Symposium on Electromagnetic Theory EMTS 2013
2013
Session Number:21AM1B
Session:
Number:21AM1B-05
An accurate near-field solver for scattering from cylinders with corners
Johan Helsing, Anders Karlsson,
pp.49-52
Publication Date:2013/5/20
Online ISSN:2188-5079
DOI:10.34385/proc.30.21AM1B-05
Summary:
This paper is about scattering of E-waves (also referred to as TM-waves) from an infinitely long, perfectly conducting cylinder with piecewise smooth boundary. The problem is formulated as an integral equation and is solved by Nyström’s method in combination with a method referred to as Recursively Compressed Inverse Preconditioning (RCIP) that efficiently handles the corners. In the numerical example an incident plane E-wave is scattered from a cylinder with one corner. We present results for kd up to 1000, where d is the diameter of the cylinder and k is the wavenumber. Even for such a large cylinder we get at least 13 digits of accuracy for the electric field everywhere outside the cylinder.