A general infinite element for terminating finite element meshes in electromagnetic scattering prediction

In this paper a general infinite element is presented which can be used in the termination of finite element meshes for scattering electromagnetic problems. The new infinite element uses an increased number of nodes in the radial direction which provides it with much improved absorption over the previously presented infinite elements. This paper will demonstrate that the previously reported two noded and four noded infinite elements are inferior in performance compared to the Bayliss Turkel absorbing boundary condition and that the multi-noded infinite element is able to give comparable results to the Bayliss Turkel ABC.