Heriot-Watt Mathematics Report Series
HWM00-4, 13 Mar 2000

Accurate and efficient algorithms for frequency domain scattering from a thin wire

P J Davies, D B Duncan and S A Funken


Abstract

This paper contains a systematic study of numerical approximations for solving the exact kernel form of Pocklington's integro-differential equation for the current induced on a thin wire by an incident time harmonic electromagnetic field. We consider various Galerkin (h, p, hp and adaptive h) and collocation schemes, and show that a sensible hp refinement strategy provides a very efficient way to solve the problem. We also describe how the kernel (itself a difficult singular integral) can be evaluated reliably and efficiently.

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Publication

P J Davies, D B Duncan, S A Funken , Accurate and efficient algorithms for frequency domain scattering from a thin wire, Journal of Computational Physics, 168, 155-183, (2001).


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