| 交替方向隐式时域有限差分算法的应用与发展 |
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| 引用本文： | 付强,刘长军.交替方向隐式时域有限差分算法的应用与发展[J].成都信息工程学院学报,2005,20(1):22-26. |
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| 作者姓名： | 付强 刘长军 |
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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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| 摘 要： | 探讨了近年来出现的交替方向隐式时域有限差分法(ADI—FDTD)的应用和发展。该方法采用求解微分方程的交替方向隐式改进了FDTD算法，无条件稳定，时间步长不受Courant稳定条件的限制，从而节约了计算时间。提供了微带线电路、平行波导板等计算实例。同时针对ADI—FDTD内存占用量较大，数值色散增加等存在的不足，讨论了一些改进方法。
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| 关 键 词： | 时域有限差分法 无条件稳定 交替方向隐式 |
| 文章编号： | 1671-1742(2005)01-0022-05 |
| 修稿时间： | 2004年5月17日 |
Recent advance of the ADI-FDTD method |
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| FU Qiang,LIU Chang-jun.Recent advance of the ADI-FDTD method[J].Journal of Chengdu University of Information Technology,2005,20(1):22-26. |
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| Authors: | FU Qiang LIU Chang-jun |
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| Abstract: | Some approaches of the ADI-FDTD algorithm are presented. 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. The numerical results of a micro-strip structure achieved by ADI-FDTD are presented. To reduce the memory requirement and numerical dispersion of ADI-FDTD, some improvements such as hybrid method and high-order method are discussed. The method may be applied to the simulation of the complex structure, especially those including both coarse and refined objects. |
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| Keywords: | FDTD unconditional stability numerical dispersion |
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