期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 70, 期 5, 页码 3575-3586出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2021.3137485
关键词
Surface impedance; Integral equations; Method of moments; Impedance; Mathematical models; Electromagnetic scattering; IP networks; Discontinuous Galerkin (DG) method; electromagnetic scattering; impedance boundary condition (IBC); integral equations; parallel computing
资金
- NSFC [61971034]
This article analyzes the mechanism of each term in the discontinuous Galerkin method and proposes a more flexible and memory-saving DG self-dual integral equation for solving electromagnetic scattering from large-scale objects with impedance boundary condition. The massively parallel strategy of the MLFMA is employed to further enhance its capability for electrically large problems, demonstrating the accuracy and efficiency of the proposed formulation for analyzing electromagnetic scattering problems.
The mechanism of each term in the discontinuous Galerkin (DG) method is analyzed and studied numerically. A simplified DG self-dual integral equation (SDIE) formulation is proposed for solving electromagnetic scattering from large-scale objects with impedance boundary condition (IBC). Numerical results show that the proposed formulation is more flexible and memory saving than the conventional DG formulations, especially for implementing the multilevel fast multipole algorithm (MLFMA). Moreover, a massively parallel strategy of the MLFMA is employed to further strengthen its capability for electrically large problems. Numerical experiments demonstrate the accuracy and efficiency of the proposed formulation for analyzing electromagnetic scattering problems of IBC objects with billions of unknowns.
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