频域电磁计算的IE-FVFD混合方法

doi:10.12305/j.issn.1001-506X.2025.12.05

Abstract

Abstract:

To efficiently simulate electromagnetic scattering problems, an electromagnetic field calculation method combining integral equation (IE) radiation boundary conditions and finite volume frequency domain (FVFD) in the frequency domain is proposed. FVFD adopts a fully implicit scheme for time advancement and flux upwind splitting calculation, while the IE algorithm integrates the truncated boundary input wave flux on the current equivalent surface within the grid. The two are combined in a loosely coupled manner. Numerical experiments show that compared with the commonly used Mur algorithm, the IE algorithm can shorten the distance from the truncated boundary to the object surface to 0.5 times the wavelength. Simulating multi-body scattering problems can be done using a global grid or independent separated grids, as well as simulating electromagnetic scattering of complex shaped targets. The proposed method can reduce grid size and effectively improve efficiency while ensuring computational accuracy.

Key words: finite volume frequency domain （FVFD） method, integral equation (IE) boundary condition, Maxwell equations, fully implicit scheme, electromagnetic scattering

CLC Number:

O 441.4

Yong XU, Jianqiang CHEN, Jian LIU, Wenjun LIU, Xintong YU. IE-FVFD hybrid method for frequency domain electromagnetic computation[J]. Systems Engineering and Electronics, 2025, 47(12): 4040-4047.

Figures/Tables 13

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Table 1

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算法	运行时间
IE-FVFD	984.13
Mur-FVFD	1 210.35
MLFMA	441

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IE-FVFD hybrid method for frequency domain electromagnetic computation

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