The effects of inaccuracies in geometry modelling on the results of electromagnetic scattering simulations

Numerical Grid Generation in Computational Field Simulations, The International Society of Grid Generation, pp.69-79, June 2002

MESHING
RESEARCH
CORNER

Abstract

Practical electromagnetic scattering simulations frequently involve domains of complex geometrical shape. For this reason, unstructured mesh methods for simulation are attractive, due to the existence of fully automatic unstructured mesh generators. The starting point for such mesh generation processes is a mathematical description of the surface of the scatterer. The importance of an accurate surface description is illustrated by considering 2D simulations of scattering by a perfectly conducting circular cylinder, of increasing electrical length. The results are presented in the form of comparisons between the computed and exact distributions of the scattering width.