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力学与实践 ›› 2004, Vol. 26 ›› Issue (1): 0-0.doi: 10.6052/1000-0992-2002-346

• 应用研究 •    

分块法研究圆柱绕流升阻力

邓见 黄钰期 任安禄   

  1. 浙江大学力学系 浙江大学力学系 浙江大学力学系
  • 收稿日期:2002-09-29 修回日期:2003-03-20 出版日期:2004-02-10 发布日期:2004-02-10

DOMAIN DECOMPOSITION METHOD FOR THE CALCULATION OF CIRCULAR CYLINDER DRAG AND LIFT IN FLOWS

  • Received:2002-09-29 Revised:2003-03-20 Online:2004-02-10 Published:2004-02-10

摘要: 使用新的分块耦合方法,分别对单圆柱和串列双圆柱绕流进行了数值 模拟. 对于单圆柱绕流,低$Re$下计算所得到的定常涡尺寸与实验非常接近. 对于 串列双圆柱绕流,研究分析了改变双圆柱中心间距对上下游圆柱的升阻力系数和脉动频率所 产生的影响,计算结果与实验非常吻合,为进一步研究涡致振动提供了依据.

关键词: 圆柱绕流, 串列双圆柱, 区域分解法

Abstract: The purpose of this paper is to present an improved domain decomposition method, and to simulate the flow around a single cylinder and two cylinders in tandem arrangement. For the calculations of flow around a single cylinder, the size of steady vortex at low $Re$ here was close to the results obtained from experiments. For the calculations of flow around two cylinders, research was applied to discuss the lift coefficient, drag coefficient and the frequency of lift curve in various spacing. The results we obtained in this paper are consistent with experiments, and provide us with some basic knowledge about vortex-induced vibration.

Key words: flow around circular cylinders, two cylinders with