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四阶抛物方程的一个并行有限差分格式

刘胜利, 张晔, 许世菊, 马富明   

  1. (吉林大学 数学学院, 长春 130012)
  • 收稿日期:2005-04-06 修回日期:1900-01-01 出版日期:2005-11-26 发布日期:2005-11-26
  • 通讯作者: 马富明

A Parallel Finite Difference Scheme for Fourth Order Parabolic Equations

LIU Shengli, ZHANG Ye, XU Shi-ju, MA Fu-ming   

  1. (College of Mathematics, Jilin University, Changchun 130012, China)
  • Received:2005-04-06 Revised:1900-01-01 Online:2005-11-26 Published:2005-11-26
  • Contact: MA Fu-ming

摘要: 针对一维四阶抛物方程给出了一类并行差分格式. 利用非对称差分格式, 通过格式组合, 将空间区域分裂成若干子区域, 然后使每个子区域独立求解, 且各子区域上的计算可以并行. 分析表明, 通过格式在不同时间层的交替, 如分组显式(GE)方法、 交替分组显式(AGE)方法、 交替分段显-隐(ASE-I)方法, 后两种方法是绝对稳定的, 而且数值试验表明计算精度较好.

关键词: 差分法, 并行计算, 抛物方程

Abstract: The present paper presents a parallel finite difference scheme for fourth order parabolic equations. By means of nonsymmetric difference schemes, we split up the space domain into several subdomains for which the solutions can be separately found and the computations can be made in parallel. Furthermore, we constructed group explicit (GE) method, alternating group explicit (AGE) method and alternating section explicit-implicit (ASE-I) method. The last two methods are unconditionally stable. The numerical results show that our methods have good accuracy.

Key words: difference method, parallel computation, parabolic equation

中图分类号: 

  • O241.3