计算物理 ›› 2006, Vol. 23 ›› Issue (3): 295-302.

• 研究论文 • 上一篇    下一篇

结构三角网上抛物方程的有限差分三层交替方法

吕桂霞1, 马富明2, 徐小文3   

  1. 1. 北京应用物理与计算数学研究所计算物理实验室, 北京 100088;
    2. 吉林大学数学科学学院,长春 130012;
    3. 中国工程物理研究院研究生部, 北京 100088
  • 收稿日期:2005-01-04 修回日期:2005-05-18 出版日期:2006-05-25 发布日期:2006-05-25
  • 作者简介:吕桂霞(1972-),女,山东安邱,博士后,博士,从事偏微分方程数值解法研究.
  • 基金资助:
    国家重点基金研究专项经费(G1999032802);国家自然科学基金(标准号:10076006)资助项目

Finite Difference Three-level Alternating Methods for the Two-dimensional Heat Equation on a Structured Triangular Mesh

LÜ Gui-xia1, MA Fu-ming2, XU Xiao-wen3   

  1. 1. Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Institute of Mathematics, Jilin University, Changchun 130012, China;
    3. Graduate School of China Academy of Engineering Physics, Beining 100088, China
  • Received:2005-01-04 Revised:2005-05-18 Online:2006-05-25 Published:2006-05-25

摘要: 讨论了在一类结构三角网上数值求解二维热传导方程的两类有限差分三层交替方法:带状交替(ABd:Alternating Band)方法和带状交替显-隐式(ABdE-I:Alternating Band Explicit-Implicit)方法.这两类方法不仅具有明显的并行性和良好的计算精度,而且理论分析表明它们都绝对稳定.

关键词: 抛物方程, 有限差分, 结构三角网, 三层交替方法

Abstract: Two finite difference three-level alternating methods for the two-dimensional heat equation on a structured triangular mesh are obtained numerically. They are ABd( Alternating Band) and ABdE-I(Ahernating Band Explicit-Implicit) methods. An alternating technique using different schemes in neighboring time levels and spatial domain is employed. A theoretical analysis and numerical experiments demonstrate that both methods show obvious parallelism, good accuracy and unconditional stability.

Key words: parabolic equation, finite difference, structured triangular mesh, three-level alternating method

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