计算物理 ›› 1997, Vol. 14 ›› Issue (2): 171-178.

• 论文 • 上一篇    下一篇

数值模拟二维槽道内Oldroyd-B流体的流动

王保国1, 王栋2, 武弘峨3   

  1. 1. 清华大学工程力学系, 北京 100084;
    2. 北京大学化学系, 100871;
    3. 河北建筑工程学院化学教研室, 河北张家口 075024
  • 收稿日期:1995-12-28 修回日期:1996-11-19 出版日期:1997-03-25 发布日期:1997-03-25

NUMERICAL SIMULATION OF OLDROYD B FLUID FLOWS THROUGH ABRUPT CONTRACTIONS

Wang Baoguo1, Wangdong2, Wu Honge3   

  1. 1. Department of Engineering Mechanics, Tsinghua University, Beijing 100084;
    2. Department of Chemistry, Peking University, Beijing 100871;
    3. Division of Chemistry, Hebei Institute of Civil Engineering and Architecture, Hebei 075024
  • Received:1995-12-28 Revised:1996-11-19 Online:1997-03-25 Published:1997-03-25

摘要: 提出一种求解Oldroyd-B流体流动的数值方法。该方法采用有限体积离散,在求解连续方程时引进Chorin的人工可压缩性;求解本构方程时考虑了迎风处理的技巧;离散后的方程采用Gauss-Seidel线松弛迭代求解全流场。典型算例表明:该方法可用于非线性粘弹流体的数值计算,所得的二维算例结果符合非牛顿粘弹性流体的流动特征。

关键词: 非牛顿流体, 粘弹性流体, 差分格式, 数值模拟

Abstract: A new hybrid finite volume method for the numerical simulation of oldroyd B fluid flows is presented.As main features of this method,the technique of Chorin s pseudo compressibility is used to solve the 3-D steady incompressible continuity equation and momentum equations and the streamline upwinding approach is used to discretize the constitutive equations.The method has dealt with a sudden contractions viscoelastic flow problem for a range of Weissenberg numbers.Numerical results obtained are in good qualitative agreement with existing exprimental ones.

Key words: Non-Newtonian fluid, viscoelastic fluid, difference scheme, numerical simulation

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