计算物理 ›› 2005, Vol. 22 ›› Issue (1): 7-12.

• 研究论文 • 上一篇    下一篇

自适应坐标变换方法

袁光伟, 沈隆钧, 沈智军   

  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
  • 收稿日期:2003-06-24 修回日期:2004-08-16 出版日期:2005-01-25 发布日期:2005-01-25
  • 作者简介:袁光伟(1963-),male,Hunan,Professor,Ph. D.,Computational mathematics.
  • 基金资助:
    Supported by China "National Key Program for Developing Basic Sciences" G1999032801,the National Natural Science Foundation of China (No.199320l0) and the Project of CAEP (ZX0107).

Adaptive Coordinate Transformation Methods

YUAN Guang-wei, SHEN Long-jun, SHEN Zhi-jun   

  1. Laboratory of Computational Physics, Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:2003-06-24 Revised:2004-08-16 Online:2005-01-25 Published:2005-01-25
  • Supported by:
    Supported by China "National Key Program for Developing Basic Sciences" G1999032801,the National Natural Science Foundation of China (No.199320l0) and the Project of CAEP (ZX0107).

摘要: 提出求解流体力学Euler方程的自适应坐标变换方法,它们保持网格夹角近似不变、保持物质界面为Lagrange描述,且使得网格速度与流体速度的差在最小二乘意义下达到极小.所提出的新坐标系能自适应于流体流场的若干重要特性.

关键词: 坐标变换, 网格生成, Lagrange方法, Euler方程

Abstract: A series of adaptive corrdinate transformation methods are proposed in which the grid angles are preserved approximately,and the material interface is kept to be Lagrangian description and a minimum difference (in the least-squares sense) between the mesh velocity and the fluid velocity is achieved.The new coordinate system is adapted to important features of flow fields.

Key words: coordinate transformation, mesh generation, Lagrangian methods, Euler equations

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