| ADI-FDTD算法的发展与改进 |
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| 引用本文： | 付强,刘长军,闫丽萍.ADI-FDTD算法的发展与改进[J].洛阳工业高等专科学校学报,2004,14(3):1-4. |
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| 作者姓名： | 付强 刘长军 闫丽萍 |
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| 作者单位： | 四川大学,电子信息学院,四川,成都,610064 |
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| 基金项目： | NSFC(编号:60301004 )的资助 |
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| 摘 要： | 介绍了近年来出现的交替方向隐式时域有限差分法（ADI-FDTD)，该方法无条件稳定，时间步长不受Courant稳定条件的限制，从而极大地节约计算时间，本文提供了微带线电路计算实例，分析了该方法存在的不足，针对ADI-FDTD内存占用量较大，数值色散增加等问题，讨论了一些改进方法，并综述了ADI-FDTD方法的新进展和发展趋势。
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| 关 键 词： | 时域有限差分法 数值色散 无条件稳定 |
| 文章编号： | 1008-8814(2004)03-0001-04 |
| 修稿时间： | 2004年5月12日 |
Recent Developments and Improvement on the ADI-FDTD Method |
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| FU Qiang LIU Changjun YAN Liping School of Electronics and Information Science,Sichuan University,Chengdu ,China.Recent Developments and Improvement on the ADI-FDTD Method[J].Journal of Luoyang Technology College,2004,14(3):1-4. |
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| Authors: | FU Qiang LIU Changjun YAN Liping School of Electronics and Information Science Sichuan University Chengdu China |
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| Institution: | FU Qiang LIU Changjun YAN Liping School of Electronics and Information Science,Sichuan University,Chengdu 610064,China |
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| Abstract: | Some approaches of ADI-FDTD algorithm are presented in this paper. The method is unconditionally stable, and the maximum time-step size is not limited by the Courant-Friedrich-Levy (CFL) condition. As a result, the CPU time may be greatly saved. Numerical results of a microstrip structure achieved by ADI-FDTD are presented. To reduce the memory requirements and numerical dispersion of ADI-FDTD, some improvements, such as hybrid method and high-order method, are discussed. The method may be applied to simulations of complex structures especially those including both coarse and refined objects. |
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| Keywords: | FDTD Unconditionally Stable Numerical dispersion |
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