计算物理 ›› 2003, Vol. 20 ›› Issue (2): 183-188.

• 论文 • 上一篇    

一维多介质可压缩流动数值方法

马东军, 孙德军, 尹协远   

  1. 中国科技大学力学和机械工程系, 安徽 合肥 230027
  • 收稿日期:2002-01-21 修回日期:2002-05-31 出版日期:2003-03-25 发布日期:2003-03-25
  • 作者简介:马东军(1975-),男,湖北洪湖,博士生,从事计算流体力学和流动稳定性方面的研究.
  • 基金资助:
    国家自然科学基金(项目编号10172082)资助项目

Numerical Methods for One-dimensional Compressible Multi-fluid Flow

MA Dong-jun, SUN De-jun, YIN Xie-yuan   

  1. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China
  • Received:2002-01-21 Revised:2002-05-31 Online:2003-03-25 Published:2003-03-25

摘要: 应用高精度界面追踪方法计算一般状态方程的多介质可压缩流动问题;应用LevelSet技术捕捉界面位置,在界面附近采用守恒数值离散,用双波近似求解一般状态方程Riemann问题,并采用统一高阶PPM格式进行内点和交界面点的计算.一维算例表明,该方法对于光滑区域以及多介质交界面具有二阶精度,能准确地模拟交界面的位置,交界面计算无数值振荡和数值耗散,并能处理一般状态方程的多介质可压缩流动问题.

关键词: 多介质可压缩流动, 一般状态方程, 界面追踪方法, 高阶Godunov格式

Abstract: A high-resolution interface tracking method is applied to simulate compressible multi-fluid flows with general equation of state in one-dimension. It captures the interface by using Level Set technique with conservative numerical discretization at interface. It uses high-order PPM scheme and two-shock approximation for GEOS Riemann problem. Results show that the computation is high-order accurate and there are no numerical oscillation and smearing at multi-fluid interface.

Key words: compressible multi-fluid flows, general equation of state, interface-tracking method, high-order Godunov scheme

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