Title :
Electromagnetic Scattering by Large Inhomogeneous 3D Targets Utilizing Finite Element Tearing and Interconnecting Method
Author :
Gao, Hong-Wei ; Sheng, Xin-Qing ; Baghai-Wadji, Alireza
Author_Institution :
Center for Electromagn. Simulation, Beijing Inst. of Technol., Beijing, China
Abstract :
Computation of electromagnetic scattering by large inhomogeneous 3D targets continues to be a challenging task. The electromagnetic dual-primal finite element tearing and interconnecting (FETI) method has been adopted in this paper. Furthermore, the perfectly matched layer (PML) technique has been utilized to truncate the simulation domain. Numerical experiments reveal that the PML model results in much higher accuracy compared with the 1st-order absorbing boundary condition model. More importantly, although the PML model gives rise to ill-conditioned discretized matrices, FETI ensures a high degree of efficiency, demonstrating the great potential of FETI for analyzing electromagnetic scattering by large inhomogeneous 3D targets.
Keywords :
electromagnetic wave scattering; finite element analysis; matrix algebra; PML technique; absorbing boundary condition model; discretized matrices; electromagnetic dual-primal FETI; electromagnetic scattering; finite element tearing-and-interconnecting method; inhomogeneous 3D target; perfectly matched layer; Computational modeling; Dielectrics; Finite element methods; Mathematical model; Numerical models; Scattering; Vectors;
Conference_Titel :
Electromagnetic Field Problems and Applications (ICEF), 2012 Sixth International Conference on
Conference_Location :
Dalian, Liaoning
Print_ISBN :
978-1-4673-1333-9
DOI :
10.1109/ICEF.2012.6310307