Numerical study of response performance of vortex-induced vibration on a flexible cylinder using modified wake oscillator model
GAO Yun1, 2, TAN Nuan1, XIONG You-ming1, ZOU Li3, ZONG Zhi3
1 State Key Laboratory of Oil and Gas Reservoir Geology and Exploration, Southwest Petroleum University, Chengdu 610500, China;
2 School of Mechanical Engineering, The University of Tokyo, Tokyo 113-8656, Japan;
3 School of Naval Architecture, Dalian University of Technology, Dalian 116024, China
Numerical study has been conducted for the response performance of VIV of a flexible cylinder based on modified wake oscillator model. The structure oscillator model of a flexible cylinder and wake oscillator model are established, and then the two models are coupled. Parameters analyses of non-dimensional displacement, phase angle, frequency ratio and displacement fluctuation characteristics are executed by changing non-dimensional tension, aspect ratio and mass ratio. The analysis results indicate that the VIV response of a flexible cylinder has an obvious travelling wave behavior. The propagation speed increases as non-dimensional tension increases and aspect ratio decreases, respectively. The phase angle has a sudden transition with increased non-dimensional tension and aspect ratio. The sudden transition appears at the point when the vibrating frequency passes the natural frequency.
高云1, 2,谭暖1, 熊友明1, 邹丽3, 宗智3. 基于改进尾流振子模型的柔性圆柱体涡激振动响应特性数值研究[J]. 振动与冲击, 2017, 36(22): 86-92.
GAO Yun1, 2, TAN Nuan1, XIONG You-ming1, ZOU Li3, ZONG Zhi3. Numerical study of response performance of vortex-induced vibration on a flexible cylinder using modified wake oscillator model. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(22): 86-92.
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