Radiation and scattering from complex 3D curvilinear geometries using a hybrid finite element-integral equation approach

The radiation and scattering properties are examined for arbitrary curvilinear geometries with very general material composition using parametric cubic geometry representations. The hybrid finite element-integral equation approach is used to take advantage of the strengths of each method. The regions of material composition are handled with the finite element method, since it can readily handle general inhomogeneous material composition. This method is then coupled to an integral equation formulation on the surface of the scatterer, since integral equations are well suited to handle the exterior domain. Both methods are formulated in generalized coordinates, and geometry input can be obtained from several commercial geometry software packages.<>