3-D Electromagnetic Scattering Vector FEM Solution with Conformal PML

Conformal perfectly matched layer (PML) can absorb electromagnetic wave efficiently and satisfy geometrical shape requirement of complex scatterer. Through reducing grid quantity in scattering region, conformal PML can save storage of computer greatly. Based on hexahedra vector finite element in ANSYS, a new orthogonal-reinforced hexahedra vector element is built by modifying vector basis functions. Due to orthogonality of sampling nodes and orthogonality of integral simultaneously, the new vector element can enhance diagonal elements' predominance and speed up solving system question group. Numerical examples show that the new element with conformal PML can not only reduce storage requirement, but also speed solution of system questions availably. Therefore it is applicable to solve 3-D electromagnetic scattering.