计算物理 ›› 1999, Vol. 16 ›› Issue (2): 211-216.

• 论文 • 上一篇    下一篇

对流占优扩散问题的高精度直线法

吴雄华, 谭志海   

  1. 同济大学应用数学系, 上海 200092
  • 收稿日期:1998-01-22 修回日期:1998-10-05 出版日期:1999-03-25 发布日期:1999-03-25
  • 作者简介:吴雄华,男,52,教授,博士

Line method with high order accuracy for convection-dominated diffusion equations

Wu Xionghua, Tan Zhihai   

  1. Department of Applied Mathematics, Tongji University, Shanghai 200092
  • Received:1998-01-22 Revised:1998-10-05 Online:1999-03-25 Published:1999-03-25

摘要: 基于常微分方程边值问题的高精度求解器SEVORD对偏微分方程作半离散,提出了求解一维对流扩散方程的高精度直线法,并采用局部一维化方法(LOD)给出了求解二维对流扩散问题的高精度交替方向直线法。

关键词: 对流占优, 局部一维化方法, 高精度, 直线法

Abstract: The line method with high order accuracy for a kind of one dimension convection_diffusion equations is presented by discretizing locally partial differential equations (PDE), which is based on the high order accurate solver-SEV ORD for ordinary differential equations (ODE) with boundary value problems. By using local one dimension method, the alternate direction line algorithm with high order accuracy is given for two dimension convection_diffusion problems.

Key words: prominent convection, local one dimension method, high order accuracy, line method

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