数学物理学报

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高维抛物方程迎风区域分裂差分方法

李长峰;袁益让   

  1. 山东大学经济学院 济南 250100
  • 收稿日期:2005-11-21 修回日期:2006-12-08 出版日期:2007-10-25 发布日期:2007-10-25
  • 通讯作者: 李长峰
  • 基金资助:

    国家重点基础研究专项经费(G1999032803)、国家自然科学基金(10372052, 10271066)和教育部博士点基金(20030422047)资助

Domain Decomposition Upwind Difference Schemes for Multidimensional Parobolic Problems

Li Changfeng ;Yuan Yirang
  

  1. School of Economics, Shandong University, Jinan 250100
  • Received:2005-11-21 Revised:2006-12-08 Online:2007-10-25 Published:2007-10-25
  • Contact: Li Changfeng

摘要: 结合迎风方法和区域分裂思想,采用一阶迎风、二阶修正迎风法逼近高维抛物方程的对流项.
内边界处和子区域分别对应区域分裂显隐格式;并运用极值原理和嵌入定理给出了收敛性分析,最后给出数值试验,说明其实际意义.

关键词: 区域分裂, 并行计算, 迎风差分, 误差估计

Abstract: Combining the domain decomposition with upwind difference method,
the authors present the convection part of multidimensional parabolic problems is discretized by the 1-order upwind method and the modified 2-order upwind method. The proposed schemes rely on implicit procedures in subdomains and explicit calculation on the inter-domain boundaries. With certain stability conditions, convergence analysis is presented by the maximum principle and embedding theorem. Finally, numerical examples illustrating the value, accuracy and parallelism are shown.

Key words: Domain decomposition, Parallel computation, Upwind difference,
Error estimates

中图分类号: 

  • 5M55