| 波动方程的人工边界条件 |
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| 引用本文： | 曹伟,陆金甫.波动方程的人工边界条件[J].计算物理,1992,9(4):469-472. |
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| 作者姓名： | 曹伟 陆金甫 |
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| 作者单位： | 1. 郑州工学院数力系, 450002;2. 清华大学应用数学系, 100084 |
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| 摘 要： | 讨论了求解无限区域内波动方程的人工边界条件问题。利用简单而方便的直接差分方法构造了两个新的人工边界条件。严格地证明了它们的稳定性及其与解析边界条件的相容性。数值结果表明,这些新的人工边界条件在计算中颇为有效。
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| 关 键 词： | 波动方程 差分方法 人工边界条件 相容性 稳定性 |
| 收稿时间： | 1992-03-30 |
ARTIFICIAL BOUNDARY CONDITIONS FOR THE WAVE EQUATION |
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| Cao wei,Lu Jinfu.ARTIFICIAL BOUNDARY CONDITIONS FOR THE WAVE EQUATION[J].Chinese Journal of Computational Physics,1992,9(4):469-472. |
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| Authors: | Cao wei Lu Jinfu |
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| Institution: | 1. Zhengzhou Institute of Technology, 450002;2. Tsinghua University, 100084 |
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| Abstract: | We consider the problem of constructing artificial boundary conditions for the wave equation. Two new boundary conditions are presented directly by a difference approximation. The stability of these boundary conditions and their consistency with the analytical boundary conditions are proved. Numericl examples indicate that these boundary conditions work effectively. |
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| Keywords: | wave equation difference method artificial boundary condition consistency stability |
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