电子学报2017，Vol.45Issue(12)：2944-2948,5.DOI:10.3969/j.issn.0372-2112.2017.12.016
基于FDTD算法的新型亚网格技术
A New Subgridding Technology Based on FDTD Algorithm
摘要
Abstract
A subgridding technique based on spatial filtering-Finite Difference Time Domain (SF-FDTD) method is proposed in this paper,the Courant-Friedrich-Levy (CFL) stability condition of the conventional FDTD algorithm can be improved by filtering operation in spatial frequency domain,thus obtaining a high stability FDTD method.The SF-FDTD algorithm is further applied to the subgridding technique,so that the time step of the subgridding region is the same as that of the coarse grid which greatly improved the computational efficiency.The numerical results show that the algorithm has high accuracy and validity in solving the electromagnetic problem with fine structure.关键词
空间滤波/时域有限差分算法/亚网格技术/稳定性条件Key words
spatial filtering/FDTD method/subgridding technique/stability condition分类
信息技术与安全科学引用本文复制引用
任昊,王胜,谢国大,王丽华,吴先良,黄志祥..基于FDTD算法的新型亚网格技术[J].电子学报,2017,45(12):2944-2948,5.基金项目
国家自然科学基金(No.61471001,No.51277001,No.61601166,No.61701001,No.61701003) （No.61471001,No.51277001,No.61601166,No.61701001,No.61701003）
安徽省自然科学基金(No.KJ2015A202) （No.KJ2015A202）
安徽高校自然科学研究重大项目(No.KJ2017ZD51,No.KJ2017ZD02) （No.KJ2017ZD51,No.KJ2017ZD02）
国家自然科学优秀青年基金(No.61722101) （No.61722101）
