一种分析半埋在PEC粗糙表面中的三维涂层物体电磁散射的有效方法

IF 0.6 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Electromagnetics Pub Date : 2023-01-02 DOI:10.1080/02726343.2023.2177393

Hongjie He, Ya Zhang, Ke-Yun Li

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引用次数: 0

摘要

摘要为了准确模拟半埋在完美导电体（PEC）粗糙表面上的三维涂层物体的电磁散射，本文提出了一种将三维矢量有限元法边界积分法（FEM-BIM）与快速多极法（FMM）相结合的有效方法。采用有限元法对涂层物体进行建模，并通过FMM增强BIM处理半埋物体与粗糙表面之间的多重相互作用。根据FEM-BIM矩阵方程的特点，采用混合求解器求解矩阵方程。此外，数值代码中还使用了OpenMP并行加速技术来加速预测过程的密集计算。通过FEKO中的多级快速多极方法（MLFMM）对TE和TM极化验证了我们的数值代码的准确性和有效性。

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An efficient method for analysis of electromagnetic scattering from a 3-D coated object half-buried in PEC rough surface

ABSTRACT To accurately simulate the electromagnetic scattering from a three-dimensional (3-D) coated object half-buried in perfectly electrically conductor (PEC) rough surface, an efficient method combining the 3-D vector finite element method-boundary integral method (FEM-BIM) with fast multipole method (FMM) is proposed in this paper. FEM is used to model the coated object and the multiple interactions between the half-buried object and rough surface are handled by FMM-enhanced BIM. According to the characteristics of the FEM-BIM matrix equations, a hybrid solver is adopted to solve the matrix equations. In addition, OpenMP parallel acceleration technique is used in the numerical code to accelerate the intensive computations of the prediction process. The accuracy and efficiency of our numerical code are validated by multilevel fast multipole method (MLFMM) in FEKO for both TE and TM polarizations.

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来源期刊

Electromagnetics 工程技术-工程：电子与电气

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

6 months

期刊介绍： Publishing eight times per year, Electromagnetics offers refereed papers that span the entire broad field of electromagnetics and serves as an exceptional reference source of permanent archival value. Included in this wide ranging scope of materials are developments in electromagnetic theory, high frequency techniques, antennas and randomes, arrays, numerical techniques, scattering and diffraction, materials, and printed circuits. The journal also serves as a forum for deliberations on innovations in the field. Additionally, special issues give more in-depth coverage to topics of immediate importance. All submitted manuscripts are subject to initial appraisal by the Editor, and, if found suitable for further consideration, to peer review by independent, anonymous expert referees. Submissions can be made via email or postal mail.