BANDPASS UNCONDITIONALLY STABLE CE-BOR-PML SCHEME WITH CNDG ALGORITHM FOR ROTATIONAL SYMMETRIC SIMULATION

Shihong Wu, Lining Liu, Yunyun Dong, Feng Su, Xiangguang Chen
2021 Progress In Electromagnetics Research M  
Unconditionally stable approximate Crank-Nicolson (CN) perfectly matched layer (PML) implementation is proposed to treat open region problems for a bandpass rotational symmetric structure. To be more specific, this implementation is based upon the CN Douglas-Gunn (DG) procedure and the complex envelope (CE) method in body of revolution (BOR) finite-difference time-domain (FDTD) lattice. The proposed scheme inherits the advantages of the CNDG procedure, CE method, and BOR-FDTD algorithm which
more » ... improve the efficiency, enhance the absorption, and maintain the calculation accuracy. The effectiveness which includes accuracy, efficiency, occupied resources, and absorption is illustrated through a numerical example. The numerical results reveal that the proposed scheme provides considerable accuracy, creditable absorption, and outstanding efficiency. Meanwhile, it can also verify that the proposed scheme is stable without the limitation of Courant-Friedrich-Levy (CFL) condition.
doi:10.2528/pierm21051401 fatcat:6ug4jonyprhphetysufkxrt56m