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MILU-CG方法和绕旋转圆柱流动的数值研究

 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

• 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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