| 驻波—行波边界条件在PSTD算法中的实现 |
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| 引用本文： | 张伟军,柴舜连,刘克成,毛钧杰. 驻波—行波边界条件在PSTD算法中的实现[J]. 国防科技大学学报, 2003, 25(2): 73-75 |
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| 作者姓名： | 张伟军 柴舜连 刘克成 毛钧杰 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 将时域伪谱法(PSTD)的边界条件PML用驻波-行波边界条件来代替.该条件在边界处附加理想电(磁)壁对计算区域进行截断,将由此产生的反射场去除,从而减少反射场所产生的干扰,在有限的空间内有效地模拟出无限大的电磁散射空间.给出了该边界条件下的二维PSTD迭代格式,并将其数值结果与运用PML边界条件的PSTD的结果进行比较,计算结果表明这种结合形成的新方法节约了内存,提高了计算速度,具有良好的可行性.
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| 关 键 词： | 驻波-行波条件 时域伪谱法 PML |
| 文章编号： | 1001-2486(2003)02-0073-03 |
| 收稿时间： | 2002-08-30 |
| 修稿时间： | 2002-08-30 |
Standing-traveling Wave Boundary Condition for the PSTD Algorithm |
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| ZHANG WeiJun,CHAI Shunlian,LIU Kecheng and MAO Junjie. Standing-traveling Wave Boundary Condition for the PSTD Algorithm[J]. Journal of National University of Defense Technology, 2003, 25(2): 73-75 |
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| Authors: | ZHANG WeiJun CHAI Shunlian LIU Kecheng MAO Junjie |
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| Affiliation: | College of Electronic Science and Engineering,National Univ. of Defense Technology,Changsha 410073,China;College of Electronic Science and Engineering,National Univ. of Defense Technology,Changsha 410073,China;College of Electronic Science and Engineering,National Univ. of Defense Technology,Changsha 410073,China;College of Electronic Science and Engineering,National Univ. of Defense Technology,Changsha 410073,China |
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| Abstract: | The paper applies the standing-traveling wave boundary condition to the PSTD method to replace the PML.In this boundary condition,electric or magnetic walls are placed around the domain to be calculated,and the reflection field is removed from the scattering incident wave.The formulation for the method in the condition of 2D is given. The method can save more memory and time than that of the PML when their results are compared. The numerical result shows that the new method is feasible. |
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| Keywords: | standing-traveling wave boundary condition (STWBC) PSTD PML |
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