ISSN 1002-1027  CN 11-2952/G2

Acta scientiarum naturalium Universitatis Pekinensis

Previous Articles     Next Articles

The Research of FEM PML Method with Mixed Order Hierarchical Vector Base Functions for 3D Radiation Problems

NIAN Feng, DONG Shuo, ZHOU Lezhu1, XIA Mingyao   

  • Received:2006-04-07 Online:2007-01-20 Published:2007-01-20

Abstract: An effective vector finite element method (FEM) for analysis of 3D radiation problem is proposed. This method combines the perfect matching layer (PML) and mixed order hierarchical vector base functions in which different order base functions are adopted in different regions according to the intensity of field distribution in the whole calculating domain.Without loss of accuracy, the efficiency of FEM+PML method can be increased greatly by the reduction of the number of unknowns and computational time compared with a pure higher order method. Correctness and effectiveness of the proposed method are demonstrated through numerical experiments.