计算物理 ›› 1992, Vol. 9 ›› Issue (4): 429-430.

• 论文 • 上一篇    下一篇

无初始条件扩散问题的差分数值解法

王如云, 方保镕   

  1. 河海大学数理系, 南京 210024
  • 收稿日期:1991-12-30 出版日期:1992-12-25 发布日期:1992-12-25

THE DIFFERENCE METHOD FOR NO INITIAL CONDITION DIFFUSION PROBLEM

Wang Ruyun, Fang Baorong   

  1. Dept. Math. and Phys., Hehai University, 210024
  • Received:1991-12-30 Online:1992-12-25 Published:1992-12-25

摘要: 对无初始条件扩散问题设计了一种二层五点显式差分格式,不仅允许时间步进长度△t较大,而且格式精度达到O(△t3,△x6)。

关键词: 无初始条件, 扩散, 差分格式

Abstract: In this paper, we design a kind of two levels five points explicit difference scheme for no initial condition diffusion problem. This kind of scheme not only allows the greater time step length, but also has the greater precision.

Key words: no initial condition, diffusion, difference scheme