【摘要】 提出一种将宏元技术引入到矢量有限元完全匹配层算法的方法,用于3-D电磁辐射特性的分析。通过把整个计算区域划分为宏元和非宏元区域,将非宏元区域内的计算信息变换到宏元区域的表面,在需要反复优化宏元区域参数的应用中,实现大量减少原有问题的有限元矩阵方程维数和求解时间,提高整体计算效率的目的。以典型天线为例,验证了该方法在提高计算效率方面的有效性。更多还原

【Abstract】 This paper presents a macro-element(ME) enhanced vector finite element method(FEM) with the perfect matching layer(PML) as boundary truncation for analyzing 3D radiation problems.By dividing the whole calculating domain into a ME sub-domain and a non-ME sub-domain and transferring the information of the non-ME part onto the surface of the ME sub-domain,the final solution domain focuses on the ME sub-domain.That reduces the matrix dimension by a large scale and accelerates the calculation efficiency greatly.This methods is very suitable for the cases that the ME sub-domain needs optimizing repeatedly for varying geometrical structures or electromagnetic parameters.Numerical implementation and effectiveness of the proposed method are demonstrated through several numerical experiments of typical antennas.更多还原