| Prediction Model for Vortex-Induced Vibration of Circular Cylinder with Data of Forced Vibration |
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| 作者姓名： | 潘志远 崔维成 刘应中 |
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| 作者单位： | State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University，State Key Laboratory of Ocean Engineering，Shanghai Jiao Tong University，State Key Laboratory of Ocean Engineering，Shanghai Jiao Tong University，Shanghai 200030，China，Shanghai 200030，China，China Ship Scientific Research Center，Wuxi116023，China，Shanghai 200030，China |
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| 基金项目： | 国家自然科学基金;上海市自然科学基金 |
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| 摘 要： | A model based on the data from forced vibration experiments is developed for predicting the vortex-induced vibrations (VIV) of elastically mounted circular cylinders in flow. The assumptions for free and forced vibration tests are explored briefly. Energy equilibrium is taken into account to set up the relationship between the dynamic response of self-excited oscillations and the force coefficients from forced vibration experiments. The gap between these two cases is bridged straightforwardly with careful treatment of key parameters. Given reduced mass m and material damping ratio ζ of an elastically mounted circular cylinder in flow, the response characteristics such as amplitude, frequency, lock-in range, added mass coefficient, cross-flow fluid force and the corresponding phase angle can be predicted all at once. Instances with different combination of reduced mass and material damping ratio are compared to investigate their effects on VIV. The hysteresis phenomenon can be interpreted reasonably. The predictions and the results from recent experiments carried out by Williamson's group are in rather good agreement.
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| 关 键 词： | 涡动搅动 反应预测模型 振动力实验 海洋工程 |
| 修稿时间： | 2006-03-092007-01-30 |
Prediction Model for Vortex-Induced Vibration of Circular Cylinder with Data of Forced Vibration |
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| PAN Zhi-yuan,CUI Wei-cheng,LIU Ying-zhong.Prediction Model for Vortex-Induced Vibration of Circular Cylinder with Data of Forced Vibration[J].China Ocean Engineering,2007,21(2):239-254. |
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| Authors: | PAN Zhi-yuan CUI Wei-cheng LIU Ying-zhong |
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| Institution: | State Key laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200030, China China Ship Scientific Research Center, Wuxi 116023, China |
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| Abstract: | |
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| Keywords: | vortex-induced vibration (VIV) forced oscillation experiments response prediction model |
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