摘要
提出了有耗介质下的波动方程时域有限差分法(WEFDTD),并应用得到其指数差分的差分格式。与传统的FDTD和采用普通差分的WEFDTD相比,提高了计算精度,且不增加存储量。同时,将这一差分方法推广得到其高阶形式。数值实验证明了这一方法的有效性。
A wave-equation finite-difference time-domain method (WEFDTD) under the lossy medium is proposed, in which exponential scheme is successfully applied. Compared with the traditional FDTD and the ordinary WEFDTD, the calculation precision is improved, with no increase in the storage capacity. Meanwhile, the high-order form of the difference method is obtained successfully. The effectiveness of this method is verified by numerical experiments.
出处
《苏州科技学院学报(自然科学版)》
CAS
2011年第1期54-58,共5页
Journal of Suzhou University of Science and Technology (Natural Science Edition)
基金
国家自然科学基金资助项目(60972101)
关键词
波动方程时域有限差分法(WEFDTD)
有耗介质
指数差分
高阶差分
wave equation finite-difference time-domain (WEFDTD) method
lossy medium
exponential difference
higher-order difference