计算物理 ›› 2007, Vol. 24 ›› Issue (5): 505-511.

• 研究论文 •    下一篇

自适应于流场变化的网格重构方法

勇珩1,2, 袁国兴1, 成娟1, 王政1   

  1. 1. 北京应用物理与计算数学研究所, 北京 100088;
    2. 中国工程物理研究院研究生部, 北京 100088
  • 收稿日期:2006-04-17 修回日期:2006-11-16 出版日期:2007-09-25 发布日期:2007-09-25
  • 作者简介:勇珩(1974-),女,山东威海,副研究员,博士生,从事激光靶耦合计算方法与数值模拟工作.
  • 基金资助:
    国家863高技术惯性约束聚变主题、中物院科学技术基金(20060106);国家自然科学基金项目(10572028);计算物理重点实验室项目(9140C6902010603)资助项目

A Rezone Strategy of Adaption to Variation of Flow Variables

YONG Heng1,2, YUAN Guoxing1, CHENG Juan1, WANG Zheng1   

  1. 1. Institute of Applied Physics and Computational Mathematics, Beijing 100088, China;
    2. Graduate School of China Academy of Engineering, Beijing 100088, China
  • Received:2006-04-17 Revised:2006-11-16 Online:2007-09-25 Published:2007-09-25

摘要: 提出九点网格重构方法,不仅生成的网格正交性和光滑性好,而且重构后的网格与物理问题解的空间分布相适应,实现了重构后的网格品质好.理论上证明了九点网格重构方法逼近椭圆型方程,并具有球对称性.数值试验表明,该方法具有很好的适应复杂区域的稳健性,在爆轰驱动或高速冲击ALE(Arbitrary Lagrangian Eulerian)数值模拟中具有较高的应用价值.

关键词: 九点网格重构方法, 自适应于流场变化, 任意拉格朗日-欧拉方法

Abstract: A nine-point rezone strategy is presented,which improves geometric quality of computational grids and keeps the rezoned grids close to Lagrangian meshes.The scheme is proved an approximation to elliptic equation with spherical symmetry.Numerical examples demonstrate robustness and effectiveness of the scheme in ALE (Arbitrary Lagrangian Eulerian) calculation of high speed impact and denotation driving.

Key words: nine-point rezone strategy, adaptive to variation of flow variables, arbitray Lagrangian Eulerian method

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