计算物理 ›› 2005, Vol. 22 ›› Issue (2): 137-142.

• 研究论文 • 上一篇    下一篇

求解Burgers方程的一种交替分段隐式算法

王廷春, 张鲁明   

  1. 南京航空航天大学理学院, 江苏 南京 210016
  • 收稿日期:2003-10-17 修回日期:2004-04-06 出版日期:2005-03-25 发布日期:2005-03-25
  • 作者简介:王廷春(1979-),男,山东,硕士生,从事偏微分方程数值解法方面的研究,南京航空航天大学234信箱.

An Alternating Segment Implicit Method for Burgers Equations

WANG Ting-chun, ZHANG Lu-ming   

  1. Department of Mathematics, Nanjing University of Aeronautics and Austronautics 210016, China
  • Received:2003-10-17 Revised:2004-04-06 Online:2005-03-25 Published:2005-03-25

摘要: 首先提出一个新的求解Burgers方程的差分格式,然后在此差分格式的基础上构造了便于并行计算的交替分段隐格式,并作了线性化稳定性分析.数值结果表明,本方法具有较高的精度,尤适于扩散项系数较小时的计算,且有效避免了数值结果的非物理振荡.

关键词: Burgers方程, 并行计算, 交替分段隐格式, 稳定性

Abstract: A two-level implicit scheme for Burgers equations is shown,whose truncation error is O(τ2+h2) (where τ is time step and h is space step).An alternating segment method is proposed and its unconditional linear stability is proved.The new method is free from nonphysical oscillations and suitable for parallel computers.A numerical example shows that the method has good applicability and high accuracy, in particular, it is more accurate when diffusion coefficient is small.

Key words: Burgers equation, parallel computing, alternating segment method, stabilty

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