PREDICTION OF VORTEX-INDUCED VIBRATION OF FLEXIBLE RISER USING AN IMPROVED WAKE-OSCILLATOR MODEL

IMECH-IR > 环境力学重点实验室(2009-2011)

	PREDICTION OF VORTEX-INDUCED VIBRATION OF FLEXIBLE RISER USING AN IMPROVED WAKE-OSCILLATOR MODEL
	Chen WM(陈伟民); Zhang LW; Li M; Chen WM
会议录名称	OMAE 2009, VOL 5
	2009
页码	377-383
会议名称	28th International Conference on Ocean, Offshore and Arctic Engineering
会议日期	MAY 31-JUN 05, 2009
会议地点	Honolulu, HI
摘要	Based on improving the wake-oscillator model, an analytical model for vortex-induced vibration (VIV) of flexible riser under non-uniform current is presented, in which the variation of added mass at lock-in and the nonlinear relationship between amplitude of response and reduced velocity are considered. By means of empirical formula combining iteration computation, the improved analytical model can be conveniently programmed into computer code with simpler and faster computation process than CFD so as to be suitable to application of practical engineering. This model is validated by comparing with experimental result and numerical simulation. Our results show that the improved model can predict VIV response and lock-in region more accurately. At last, illustrative examples are given in which the amplitude of response of flexible riser experiencing VIV under action of non-uniform current is calculated and effects of riser tension and flow distribution along span of riser are explored. It is demonstrated that with the variation of tension and flow distribution, lock-in region of mode behaves in different way, and thus the final response is a synthesis of response of locked modes.
关键词	Circular-cylinder Added-mass Forces
WOS记录号	WOS:000282991700042
ISBN号	978-0-7918-4345-1
URL	查看原文
收录类别	CPCI-S ; EI
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/44324
专题	环境力学重点实验室(2009-2011)
通讯作者	Chen WM
推荐引用方式 GB/T 7714	Chen WM,Zhang LW,Li M,et al. PREDICTION OF VORTEX-INDUCED VIBRATION OF FLEXIBLE RISER USING AN IMPROVED WAKE-OSCILLATOR MODEL[C]OMAE 2009, VOL 5,2009:377-383.

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