数学物理学报

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热传导-对流问题的回溯二重水平法

罗振东;陈静;田向军   

  1. 贵州师范大学数学与计算机科学学院 贵阳 550001
  • 收稿日期:2005-12-19 修回日期:2006-11-18 出版日期:2007-12-25 发布日期:2007-12-25
  • 通讯作者: 罗振东
  • 基金资助:
    国家自然科学基金(10471100, 40437017)和北京交通大学科技基金资助

A Two-Level Method with Backtracking for the

Conduction-Convection Problems

Luo Zhendong;Chen Jing\quad ;Tian Xiangjun   

  1. School of Mathematics and Computer Science, Guizhou Normal University, Guiyang 550001
  • Received:2005-12-19 Revised:2006-11-18 Online:2007-12-25 Published:2007-12-25
  • Contact: Luo Zhendong

摘要: 该文给出定常的热传导-对流问题的有限元逼近的一种二重水平方法. 这种二重水平方法包括解一个小的非线性的粗网格系统、一个细网格上的线性Oseen问题和一个粗网格上的线性校正问题. 同时,给出了这种近似解的存在性和收敛性分析.

关键词: 热传导-对流问题, 回溯二重水平方法, 混合有限元法, 误差估计

Abstract: In this paper, a two-level method for resolving the nonlinearity in finite
element approximation of the stationary conduction-convection problems is presented. The two-level method involves solving
one small, nonlinear coarse mesh system, one Oseen problem on the fine mesh and one linear correction problem on the coarse mesh. Meanwhile, the existence and convergence of approximate solutions are shown.

Key words: Conduction-convection problems, Two-level method with backtracking,
Mixed element method,
Error estimate

中图分类号: 

  • 65N30