| 旋转体波动方程时域有限差分法 |
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| 引用本文： | 王建永,赵长青,李庆武.旋转体波动方程时域有限差分法[J].系统仿真学报,2007,19(4):735-737. |
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| 作者姓名： | 王建永 赵长青 李庆武 |
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| 作者单位： | 1. 河海大学数理部,江苏,常州,213022
2. 河海大学计算机与信息工程学院,江苏,常州,213022 |
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| 基金项目： | 河海大学校科研和教改项目 |
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| 摘 要： | 为仿真电磁波与旋转体的相互作用,通过把电磁场的6个分量作傅里叶展开,把三维波动方程简化至二维,并用时域有限差分法(FDTD)基本原理求解二维波动方程,实现了旋转体波动方程时域有限差分法(BOR WE FDTD)。相对于旋转体时域有限差分法(BORFDTD),BOR WE FDTD具有节约内存和机时、程序简单等优势。通过模拟介质球对简谐波的散射,并把结果和理论结果、BORFDTD结果作对比,证实了BORWEFDTD的有效性。
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| 关 键 词： | 时域有限差分法(FDTD) 波动方程 旋转体 内存 机时 |
| 文章编号： | 1004-731X（2007）04-0735-03 |
| 收稿时间： | 2005-12-01 |
| 修稿时间： | 2006-11-13 |
Body-of-revolution Wave Equation Finite-difference Time-domain Method |
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| WANG Jian-yong,ZHAO Chang-qing,LI Qing-wu.Body-of-revolution Wave Equation Finite-difference Time-domain Method[J].Journal of System Simulation,2007,19(4):735-737. |
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| Authors: | WANG Jian-yong ZHAO Chang-qing LI Qing-wu |
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| Institution: | 1 .Department of Mathematics and Physics, Hohai University, Changzhou 213022, China; 2. College of Computer and Information Engineering, Hohai University, Changzhou 213022, China |
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| Abstract: | To simulate EM wave interaction on a body-of-revolution,a 3-D wave equation was reduced to 2-D by representing 6 components of EM field in terms of Fourier series expansion,and the 2-D wave equation was solved using the fundamental principle of finite-difference time-domain method(FDTD).So body-of-revolution wave equation finite-difference time-domain method(BOR WE FDTD) was realized.In comparison with body-of-revolution finite-difference time-domain method(BOR FDTD),BOR WE FDTD has the advantages of less computer memory,less computer burden,and simpler program.The validity of BOR WE FDTD is verified by modeling harmonic wave scattering by a dielectric sphere,comparing the results to analytic results and results of BOR FDTD. |
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| Keywords: | finite-difference time-domain method(FDTD) wave equation body-of-revolution computer memory computer burden |
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