高雷诺数下圆柱顺流向和横向涡激振动分析

唐友刚 樊娟娟 张杰 王丽元 桂龙

振动与冲击 ›› 2013, Vol. 32 ›› Issue (13) : 88-92.

PDF(1568 KB)
PDF(1568 KB)
振动与冲击 ›› 2013, Vol. 32 ›› Issue (13) : 88-92.
论文

高雷诺数下圆柱顺流向和横向涡激振动分析

  • 唐友刚 樊娟娟 张杰 王丽元 桂龙
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Analysis of in Line And Transverse Vortex-Induced Vibration for a Circular Cylinder at High Reynolds Number

  • Tang yougang, Fan juanjuan,Zhang jie,Wang liyuan,Gui long
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摘要

本文利用CFD方法,研究了较高雷诺数下圆柱流向与横向耦合涡激振动特性。利用FLUENT软件求解粘性Navier-Stokes方程、圆柱涡激振动的结构动力响应方程,运用动网格技术,实现流固耦合,对圆柱进行了单自由度和两自由度涡激振动的数值模拟,得到了雷诺数为 范围内的圆柱涡激振动的升力系数、阻力系数、振幅比及频率比随约化速度变化的规律,捕捉到涡激流固耦合振动的“锁定”“相位开关”等现象,结果表明在此雷诺数范围内锁定区域对应的折减速度范围为Ur=3~7.5。对比单自由度及两自由度的模拟结果,表明在低质量比情况下,流向的振动会对横向振动产生影响。

Abstract

With CFD method, the characteristics of Vortex-Induced Vibration for a Circular Cylinder at High Reynolds Number are studied. Navier-Stokes equation and the circular cylinder’ movement equation are solved by the software FLUENT. With the dynamic mesh of FLUENT, one-way and two-way fluid-structure interaction VIV are simulated. Through this paper, the lift coefficient and the drag coefficient and the amplitude ratio and the vortex shedding frequency ratio between the Reynolds Number are obtained; the “lock-in” and “phase switch “were confirmed.The results show that in this Reynolds number range, the corresponding lock region is for Ur = 3 ~ 7.5 .The results of one-way and two-way VIV simulation show that larger damp will weaken the VIV level, and in the low quality, small damping, longitudinal freedom vortex-induced vibration will aggravate transverse vibration.

关键词

高雷诺数 / 涡激振动 / 流固耦合 / 约化速度

Key words

High Reynolds Number / Vortex-Induced Vibration / fluid-structure interaction / Reduced speed

引用本文

导出引用
唐友刚 樊娟娟 张杰 王丽元 桂龙 . 高雷诺数下圆柱顺流向和横向涡激振动分析[J]. 振动与冲击, 2013, 32(13): 88-92
Tang yougang;Fan juanjuan;Zhang jie;Wang liyuan;Gui long. Analysis of in Line And Transverse Vortex-Induced Vibration for a Circular Cylinder at High Reynolds Number[J]. Journal of Vibration and Shock, 2013, 32(13): 88-92

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