A New Conformal FDTD(2,4) Scheme for Modeling Three-Dimensional Curved Perfectly Conducting Objects
A New Conformal FDTD(2,4) Scheme for Modeling Three-Dimensional Curved Perfectly Conducting Objects
复制标题
DOI：
10.1109/lmwc.2008.916772
复制
发表时间：
2008-03
影响因子：
3
通讯作者：
W. Sha;Xianliang Wu;Zhixiang Huang;Mingsheng Chen
中科院分区：
文献类型：
--
作者：
W. Sha;Xianliang Wu;Zhixiang Huang;Mingsheng Chen
针对三维弯曲理想导体目标的电磁散射问题，提出了一种新的高阶共形FDTD(2，4)格式。对于电场分量，不需要修改更新方程。对于磁场分量，内环采用局部保角技术处理，外环不作修改。数值结果表明，在粗网格条件下，高阶保角格式可以获得比低阶保角方法和高阶阶梯法更高的数值精度，从而节省了计算时间和内存。
A new high-order conformal FDTD(2,4) scheme is proposed to solve the electromagnetic scattering from 3-D curved perfectly conducting objects. For electric field components, the update equations do not need to be modified. For magnetic field components, the inner loop is treated with the locally conformal technique, and the outer loop is unmodified. Numerical results demonstrate that the high-order conformal scheme can obtain better numerical precision under coarse grid condition compared with the low-order conformal method and the high-order staircasing approach, which in turn saves CPU time and memory.