Experimental investigation of a new device in suppressing vortex-induced vibrations of a circular cylinder

CORC > 力学研究所 > 中国科学院力学研究所 > 水动力学与海洋工程重点实验室(2009-2011)

	Experimental investigation of a new device in suppressing vortex-induced vibrations of a circular cylinder
	Lin LM(林黎明); Zhong XF(钟兴福); Wu YX(吴应湘); Lin LM(林黎明)
	2011
会议名称	21st International Offshore and Polar Engineering Conference, ISOPE-2011
会议日期	JUN 19-24, 2011
会议地点	Maui, HI, United states
关键词	Circular cylinders Experiments Instrument scales Marine risers Vibrations (mechanical) Vortex flow Vortex shedding Passive control Riser Suppression Vortex induced vibration Wavy disturbance
页码	1283-1288
通讯作者	林黎明
中文摘要	In suppressing vortex-induced vibration (VIV) of flexible risers in deep sea, a new device based on the Bernoulli equation and effects of geometric disturbance on flows around a bluff body is proposed. The mechanism is the disturbance in a radial-spanwise plane on fluid flows around the body and spanwise uniformity of vortex shedding. In present experiments, two types of disturbance, harmony and cone-like, and different waviness (ratio of wave height to wavelength) of 0.025, 0.05 and 0.1 are investigated. Experimental results have shown that oscillating amplitudes with such disturbance are reduced at mild and high waviness at occurrence of synchronization of a circular cylinder without disturbance. Reduction of RMS values reach up to 48.5% for harmonic disturbance and 53% for cone-like disturbance at the waviness of 0.1.
收录类别	EI
产权排序	1 Key Laboratory for Hydrodynamics and Ocean Engineering, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
会议录	PROCEEDINGS OF THE 21ST (2011) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, ISOPE-2011
会议录出版者	INTERNATIONAL SOCIETY OF OFFSHORE AND POLAR ENGINEERS, P.O. BOX 189, CUPERTINO, CA 95015-0189, UNITED STATES
语种	英语
ISSN号	1098-6189
ISBN号	978-1-880653-96-8
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46847]
专题	力学研究所_水动力学与海洋工程重点实验室(2009-2011)
通讯作者	Lin LM(林黎明)
推荐引用方式 GB/T 7714	Lin LM,Zhong XF,Wu YX,et al. Experimental investigation of a new device in suppressing vortex-induced vibrations of a circular cylinder[C]. 见:21st International Offshore and Polar Engineering Conference, ISOPE-2011. Maui, HI, United states. JUN 19-24, 2011.