EFFICIENT VECTORIAL HYBRID FE-BE METHOD FOR ELECTROMAGNETIC SCATTERING PROBLEM

In this thesis block circulant boundary meshes are introduced to 3-dim ensional electromagnetic scattering problem to overcome excessive stor age requirement of hybrid finite element-boundary element method. In a ddition, edge elements are incorporated for this vectorial hybrid meth od. This boundary mesh makes use of axi-symmetry to produce block circ ulant boundary element matrices, and results in up to 64-fold reductio n in matrix storage. To demonstrate its efficiency this hybrid scheme is applied to a time-harmonic electromagnetic scattering from a double -layered dielectric sphere.