| 一种新型的吸收边界条件 |
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| 引用本文： | 吴昌英,温浩,许家栋.一种新型的吸收边界条件[J].系统工程与电子技术,2003,25(12):1555-1557. |
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| 作者姓名： | 吴昌英 温浩 许家栋 |
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| 作者单位： | 西北工业大学电子工程系,陕西,西安,710072 |
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| 摘 要： | 在应用时域有限差分法得到Maxwell方程的数值解时,需要采用吸收边界条件来截断无限大空间。比较已存在的数种吸收边界条件,提出了一种新的吸收边界条件——电流吸收边界条件。它人为地采用理想导电体包裹计算区域,并在边界上引入辅助电流来截断无限空间,抵消反射波,保持计算域内的行波状态。数值计算结果表明,这是一种简单、高效的吸收边界条件。
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| 关 键 词： | 吸收边界条件 理想导电体 电流 |
| 文章编号： | 1001-506(2003)12-1555-03 |
| 修稿时间： | 2002年7月16日 |
Novel absorbing boundary condition |
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| WU Chang-ying,WEN Hao,XU Jia-dong.Novel absorbing boundary condition[J].System Engineering and Electronics,2003,25(12):1555-1557. |
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| Authors: | WU Chang-ying WEN Hao XU Jia-dong |
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| Abstract: | Since the numeral solution of Maxwell's equations is obtained by using FDTD method it is necessary to adopt the absorbing boundary conditions for cutting off the infinite large space. A novel techniqne, current absorbing boundary condition, is proposed. It applies artificially ideal conductor to bind up the computation area and introduces additional current to cutting off infinite space and counteracting the reflect wave, and the travel state in computadon area is held. Numerical computation results show that it is a simple and effective absorbing boundary condition. |
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| Keywords: | absorbing boundary condition perfect electronic conductor current |
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