计算物理 ›› 2005, Vol. 22 ›› Issue (2): 95-107.

• 研究论文 •    下一篇

双曲方程外问题的完全无反射人工边界条件

韩厚德, 郑春雄   

  1. 清华大学数学科学系, 北京 100084
  • 收稿日期:2004-08-04 修回日期:2004-11-23 出版日期:2005-03-25 发布日期:2005-03-25
  • 作者简介:韩厚德(1938-),Male,Henan Province,Professor,Numerical solutions of partial differential equations.
  • 基金资助:
    Supported by the NSFC under Grant No. 10401020 and Grant No. 10471073

Exact Nonreflecting Boundary Conditions for Exterior Problems of the Hyperbolic Equation

HAN Hou-de, ZHENG Chun-xiong   

  1. Department of Mathematical Sciences, Tsinghua University, Beijing 100084, China
  • Received:2004-08-04 Revised:2004-11-23 Online:2005-03-25 Published:2005-03-25
  • Supported by:
    Supported by the NSFC under Grant No. 10401020 and Grant No. 10471073

摘要: 研究了数值求解双曲方程外问题的人工边界方法.在圆形的人工边界上,得到了三类等价的完全无反射的人工边界条件.给出的数值例子验证了方法的有效性.

关键词: 外问题, 无界区域, 人工边界条件, 双曲方程, 时间相关

Abstract: An artificial boundary numerical method for the exterior problems of the hyperbolic equation is considered.Three kinds of equivalent exact nonreflecting boundary conditions are derived on a circular artificial boundary.Numerical examples are presented and effectiveness of these artificial boundary conditions is demonstrated.

Key words: exterior problem, unbounded domain, artificial boundary condition, hyperbolic equation, time-dependent

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