计算物理 ›› 2003, Vol. 20 ›› Issue (4): 307-310.

• 论文 • 上一篇    下一篇

抛物型方程一类自由边界问题的微分求积区域分裂法

吴雄华, 吴芸   

  1. 同济大学应用数学系, 上海 200092
  • 收稿日期:2002-05-20 修回日期:2002-09-18 出版日期:2003-07-25 发布日期:2003-07-25
  • 作者简介:吴雄华(1946-),男,浙江瑞安,教授,博士,从事微分方程数值解方面的研究.
  • 基金资助:
    国家自然科学基金(10171078)资助项目

Differential Quadrature Domain Decomposition Method for a Kind of Free Boundary Problems of Parabolic Equations

WU Xiong-hua, WU Yun   

  1. Deparmtent of Applied Mathematics, Tongji University, Shanghai 200092, China
  • Received:2002-05-20 Revised:2002-09-18 Online:2003-07-25 Published:2003-07-25

摘要: 在微分求积法的基础上,结合区域分裂法的优点提出了一种新的数值计算方法——微分求积区域分裂法.数值试验表明,该方法在求解抛物型方程一类初值带有弱奇性的自由边界问题时十分灵活有效.

关键词: 微分求积区域分裂法, 弱奇性, 自由边界, 边界归化

Abstract: A new numerical computational Method,Differential Quadrature Domain Decomposition Method,is presented based on the advantages of Differential Quadrature Method and Domain Decomposition Method.Numerical examples find the method is more convenient and efficient for a kind of free boundary problems of parabolic equation with weak singularity in the initial value.

Key words: Differential Quadrature Domain Decomposition Method, weak singularity, free boundary, boundary reduction

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