Experimental study of vortex-induced vibrations of a cylinder near a rigid plane boundary in steady flow
Experimental study of vortex-induced vibrations of a cylinder near a rigid plane boundary in steady flow
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稳定流中刚性平面边界附近圆柱体涡激振动的实验研究
DOI：
10.1007/s10409-008-0221-7
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发表时间：
2009-01
影响因子：
3.5
通讯作者：
Wu, Yingxiang
中科院分区：
文献类型：
--
作者：
Yang, Bing;Jeng, Dong-Sheng;Gao, Fuping;Wu, Yingxiang
本文对定常流动中刚性平面边界附近圆柱体的涡激振动进行了实验研究。在水槽中再现了刚性平面边界附近圆柱的涡激振动现象。用热膜测速法和氢气泡法测量了旋涡脱落频率和模态。通过参数分析，研究了折合速度、间隙直径比、稳定性参数和质量比对圆柱振动响应的影响。实验结果表明：（1）在亚临界流区，近平面边界处的固定圆柱的Strouhal数St约为0.2;（2）随着间隙直径比e0/D的增大，振幅比A/D增大，但频率比f/fn略有变化（3）在较大的间隙直径比之间，圆柱体的振幅和频率响应存在明显的差异（e0/D> 0.66）和较小的（e0/D< 0.3）;（四）随着稳定性的降低，筒体更容易发生振动，且振动范围以Vr数表示（5）随着质量比的减小，以V和频率比（f/fn）表示的锁定范围的宽度变大。
In this study, the vortex-induced vibrations of a cylinder near a rigid plane boundary in a steady flow are studied experimentally. The phenomenon of vortex-induced vibrations of the cylinder near the rigid plane boundary is reproduced in the flume. The vortex shedding frequency and mode are also measured by the methods of hot film velocimeter and hydrogen bubbles. A parametric study is carried out to investigate the influences of reduced velocity, gap-to-diameter ratio, stability parameter and mass ratio on the amplitude and frequency responses of the cylinder. Experimental results indicate: (1) the Strouhal number (St) is around 0.2 for the stationary cylinder near a plane boundary in the sub-critical flow regime; (2) with increasing gap-to-diameter ratio (e0/D), the amplitude ratio (A/D) gets larger but frequency ratio (f/fn) has a slight variation for the case of larger values ofe0/D(e0/D> 0.66 in this study); (3) there is a clear difference of amplitude and frequency responses of the cylinder between the larger gap-to-diameter ratios (e0/D> 0.66) and the smaller ones (e0/D< 0.3); (4) the vibration of the cylinder is easier to occur and the range of vibration in terms ofVrnumber becomes more extensive with decrease of the stability parameter, but the frequency response is affected slightly by the stability parameter; (5) with decreasing mass ratio, the width of the lock-in ranges in terms ofVrand the frequency ratio (f/fn) become larger.
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DOI：
--
发表时间：
1978-08
期刊：
--
影响因子：
--
作者：
T. Sarpkaya
通讯作者：
T. Sarpkaya
DOI：
--
发表时间：
1990
期刊：
--
影响因子：
--
作者：
M. Zdravkovich
通讯作者：
M. Zdravkovich
影响因子：
0.8
作者：
B. Sumer;J. Fredsøe
通讯作者：
B. Sumer;J. Fredsøe
DOI：
10.4043/3991-ms
发表时间：
1981
期刊：
--
影响因子：
--
作者：
D. Tsahalis;W. Jones
通讯作者：
D. Tsahalis;W. Jones
DOI：
10.1115/1.3256990
发表时间：
1987-02
影响因子：
1.6
作者：
J. Fredsøe;B. M. Sumer;J. Andersen;E. Hansen
通讯作者：
J. Fredsøe;B. M. Sumer;J. Andersen;E. Hansen