计算物理 ›› 2003, Vol. 20 ›› Issue (6): 493-497.

• 论文 • 上一篇    下一篇

一维非线性对流占优扩散方程的变网格特征差分方法

王同科   

  1. 天津师范大学数学科学学院, 天津 300074
  • 收稿日期:2002-10-25 出版日期:2003-11-25 发布日期:2003-11-25
  • 作者简介:王同科(1965-),男,河南南阳,副教授,博士,从事微分方程数值算法研究.

Characteristic Difference Method with Moving Mesh for One-dimensional Nonlinear Convection-dominated Diffusion Equations

WANG Tong-ke   

  1. Faculty of Mathematical Science, Tianjin Normal University, Tianjin 300074, China
  • Received:2002-10-25 Online:2003-11-25 Published:2003-11-25

摘要: 针对一维非线性对流占优扩散方程,提出了一类变网格特征差分格式,该格式能够根据解的梯度变化及时对计算网格进行调整.与均匀网格格式相比,给出的变网格特征差分格式对于对流占优扩散问题有着更好的计算效果.

关键词: 一维非线性对流占优扩散方程, 变网格特征差分格式, 最大模误差估计

Abstract: A class of characteristic difference method with moving mesh is presented for one-dimensional nonlinear convection-dominated diffusion equations.This method can adaptively adjust the computational mesh according to the gradient of the solutions.Compared with the uniform mesh method,the method in this paper has higher computational efficiency for convection-dominated diffusion equations.

Key words: one-dimensional nonlinear convection-dominated diffusion equation, characteristic difference scheme with moving mesh, maximum norm error estimate

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