An experimental investigation of two-degrees-of-freedom VIV trajectories of a cylinder at different scales and natural frequency ratios
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- 作者：Zhuang Kang ; Wenchi Ni ; niwenchi@hrbeu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Liping Sun
- 关键词：VIV with two-DOF ; Model experiments ; Effect of model scale ; VIV trajectories
- 刊名：Ocean Engineering
- 出版年：2016
- 出版时间：1 November 2016
- 年：2016
- 卷：126
- 期：Complete
- 页码：187-202
- 全文大小：7559 K
文摘
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An experimental investigation of two-degrees-of-freedom VIV trajectories of a cylinder at different scales was done.
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The cylinders with different L/D values have different motion trajectories.
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When the cylinder's aspect ratio is relatively small, only the figure 8 form was observed in the presented results.
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The natural vibration frequency ratio, absolute value of the natural vibration frequency, the mass ratio and model scales also play an important part in the vibration trajectory.