电子科技大学学报2025，Vol.54Issue(4)：481-487,7.DOI:10.12178/1001-0548.2024020
电磁散射问题的隐式频域有限体积方法
Implicit frequency-domain finite volume method for electromagnetic scattering problems
许勇 1孙俊峰1
作者信息
- 1. 中国空气动力研究与发展中心计算空气动力研究所,绵阳 621000
- 折叠
摘要
Abstract
A novel implicit frequency-domain finite volume method for directly solving the scattered-field formulation of frequency-domain Maxwell's equations is proposed to obtain the precise spatial distribution of electromagnetic fields and scattering characteristics of targets under harmonic wave incidence.This method is an extension of the time-domain finite volume method from temporal to spectral domains,transforming solution variables from real-valued 4D spacetime coordinates into complex-valued 3D spatial representations while enabling applications of various steady-state acceleration techniques.It is a semi-discrete scheme,whose solution process involves two steps:steady-state virtual time integration and implicit LU-SGS(lower upper symmetric Gauss Siedel)solving of the spatial flux residual.Calculations with Large Courant number show that this implicit algorithm has the advantage of unconditional stability.Numerical examples demonstrate that the frequency-domain finite volume method exhibits comparable computational accuracy to methods of the moments and Mie series solutions.It indicates that this method has extensive applicability across various scenarios.关键词
麦克斯韦方程组/频域有限体积法/隐式LU-SGS/电磁散射/雷达散射截面Key words
Maxwell equations/finite volume frequency domain method(FVFD)/implicit LU-SGS/electromagnetic scattering/radar cross section(RCS)分类
数理科学引用本文复制引用
许勇,孙俊峰..电磁散射问题的隐式频域有限体积方法[J].电子科技大学学报,2025,54(4):481-487,7.
