计算物理 ›› 2007, Vol. 24 ›› Issue (2): 239-246.

• 论文 • 上一篇    下一篇

抛物方程显隐修正迎风区域分裂差分法

李长峰1, 袁益让2   

  1. 1. 山东大学经济学院, 山东 济南 250100;
    2. 山东大学数学与系统科学学院, 山东 济南 250100
  • 收稿日期:2005-10-25 修回日期:2006-07-06 出版日期:2007-03-25 发布日期:2007-03-25
  • 作者简介:李长峰(1977-),mail,Shandong,PhD,Numerical methods for partial differential equations.
  • 基金资助:
    Supported by the major State Basic Research of China(Grant No.1999032803);the National Natural Science Foundation of China(Grant No.10372052,10271066);the Doctorate Foundation of the Ministry of Education of China(Grand No.20030422047)

Domain Decomposition Explicit/Implicit Scheme with Modified Upwind Method for Parabolic Equations

LI Changfeng1, YUAN Yirang2   

  1. 1. School of Economics, Shandong University, Jinan 250100, China;
    2. School of Mathematics and System Sciences, Shandong University, Jinan 250100, China
  • Received:2005-10-25 Revised:2006-07-06 Online:2007-03-25 Published:2007-03-25
  • Supported by:
    Supported by the major State Basic Research of China(Grant No.1999032803);the National Natural Science Foundation of China(Grant No.10372052,10271066);the Doctorate Foundation of the Ministry of Education of China(Grand No.20030422047)

摘要: 给出抛物方程一种有效的区域分裂差分格式,提高了计算效率.对一阶项采用二阶迎风差分格式,内边界点和各子区域分别采用显隐差分格式.在较弱的稳定性条件下,得到离散l2模误差估计结果.最后给出具体的数值算例,以验证方法的实用性.

关键词: 区域分裂, 并行计算, 修正迎风差分, 误差估计

Abstract: An efficient domain decomposition scheme for parabolic equations is discussed,which applies a modified upwind approximation to the first-order derivative.For parallel computation the scheme employs implicit procedures in subdomains and adopts explicit calculations with inter-domain boundaries.With a weaker stability constraint,error estimate in a discrete l2 norm is presented.Theoretical analyses are validated by numerical experiments.

Key words: domain decomposition, parallel computation, modified upwind difference, error estimates

中图分类号: