计算物理 ›› 2007, Vol. 24 ›› Issue (1): 19-28.

• 论文 • 上一篇    下一篇

求解二维三温辐射热传导方程组的一种网格自适应方法

江军, 舒适, 黄云清, 陈龙   

  1. 湘潭大学数学与计算科学学院, 湖南 湘潭 411105
  • 收稿日期:2005-08-30 修回日期:2005-11-28 出版日期:2007-01-25 发布日期:2007-01-25
  • 作者简介:江军(1970-),男,湖南桃源,博士生,主要从事偏微分方程数值解及网格自适应研究.
  • 基金资助:
    国家自然科学基金与中国工程物理研究院联合基金(10376031);国家重点基础研究发展计划(2005CB321701,2005CB321702)资助项目

A Mesh Adaptive Method for Two-Dimensional Three-Tempeature Heat Conduction Equations

JIANG Jun, SHU Shi, HUANG Yunqing, CHEN Long   

  1. School of Math and Computational Science, Xiangtan University, Xiangtan 411105, China
  • Received:2005-08-30 Revised:2005-11-28 Online:2007-01-25 Published:2007-01-25

摘要: 在求解二维三温辐射热传导方程组的过程中,设计了一类新的基于Hessian矩阵的网格自适应算法.数值实验结果表明,与现在流行的基于一阶导数或通量的网格自适应技术相比,该算法能够大幅改善系统的能量守恒误差,并具有较高的整体计算效率.

关键词: 激光约束核聚变, 二维三温辐射热传导方程, 网格自适应, Hessian矩阵

Abstract: A mesh adaptation approach based on Hessian matrix is proposed to solve two-dimensional heat conductione equations with coupled electron,iron and photon temperatures.Three kinds of adaptive mesh and two adaptation methods based on gradient and flux of the photon finite element solution are used. It is shown that the energy conservation error and computation efficiency of the approach are improved.

Key words: laser-driven inertial confinement fusion, two-dimensional three-temperature heat conduction equation, mesh adaptation, Hessian matrix

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