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MILU-CG方法和绕旋转圆柱流动的数值研究

凌国平 凌国灿

凌国平, 凌国灿. MILU-CG方法和绕旋转圆柱流动的数值研究[J]. 应用数学和力学, 1998, 19(8): 731-739.
引用本文: 凌国平, 凌国灿. MILU-CG方法和绕旋转圆柱流动的数值研究[J]. 应用数学和力学, 1998, 19(8): 731-739.
Ling Guoping, Ling Guocan. MILU-CG Method and the Numerical Study on the Flow around a Rotating Circular Cylinder[J]. Applied Mathematics and Mechanics, 1998, 19(8): 731-739.
Citation: Ling Guoping, Ling Guocan. MILU-CG Method and the Numerical Study on the Flow around a Rotating Circular Cylinder[J]. Applied Mathematics and Mechanics, 1998, 19(8): 731-739.

MILU-CG方法和绕旋转圆柱流动的数值研究

基金项目: * 江苏省自然科学基金和中国科学院力学研究所非线性力学开放实验室资助
详细信息
  • 中图分类号: O241.3;O357

MILU-CG Method and the Numerical Study on the Flow around a Rotating Circular Cylinder

  • 摘要: 本文采用以修正的不完全LU分解作预处理器的共轭梯度法(MILU-CG),结合高阶隐式差分格式,改进了作者(1992)提出的基于区域分解、有限差分法与涡法杂交的数值方法(HDV).系统地研究了雷诺数Re=1000,200,旋转速度比α∈(0.5,3.25)范围内,绕旋转圆柱从突然起动到充分发展,长时间内尾流旋涡结构和阻力、升力系数的变化规律.计算所得流线与实验流场显示相比,完全吻合.首次揭示了临界状态时的旋涡结构特性,并指出最佳升阻比就在该状态附近得到.
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出版历程
  • 收稿日期:  1996-01-31
  • 修回日期:  1997-12-29
  • 刊出日期:  1998-08-15

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