计算物理 ›› 2003, Vol. 20 ›› Issue (3): 205-209.

• 论文 • 上一篇    下一篇

解三维扩散方程的积分内插法格式

陈光南1, 李德元1, 万正苏2   

  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. 上海大学数学系, 上海 200436
  • 收稿日期:2002-05-10 修回日期:2002-08-22 出版日期:2003-05-25 发布日期:2003-05-25
  • 作者简介:陈光南(1937-),男,江苏常州,研究员,博士生导师,从事计算数学方面的研究,北京8009信箱12分箱100088.
  • 基金资助:
    国家高技术863计划惯性约束聚变委员会基金资助项目;计算物理国家重点实验室基金资助项目

Difference Scheme by Integral Interpolation Method for Three Dimensional Diffusion Equation

CHEN Guang-nan1, LI De-yuan1, WAN Zheng-su2   

  1. 1. Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Department of Mathematics, Shanghai University, Shanghai 200436, China
  • Received:2002-05-10 Revised:2002-08-22 Online:2003-05-25 Published:2003-05-25

摘要: 研究三维扩散方程的数值模拟.在非正规六面体网格上,使用积分内插法建立扩散方程差分格式,涉及到27个相邻网格,适用于大变形网格上带间断系数的拟线性扩散方程的计算.叙述差分格式的建立,推导通量流和网格顶点温度的计算公式,给出了数值试验结果.

关键词: 积分内插法, 非正规六面体网格, 三维扩散方程, 差分格式

Abstract: Numerical simulation for three-dimensional diffusion equation is studied. Using integral interpolation method, the difference scheme on the irregular hexahedral grid is constructed which consists of 27 neighboring grids and is available for solving quasi-linear diffusion equation with discontinuous coefficients on distortion mesh. Flow flux through interfaces and temperature on the nodes are deduced and numerical test is given.

Key words: integml interpolation method, irregular hexahedml grid, three-dimensional diffusion equation, difrerence scheme

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