Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines
	Zang ZP(臧志鹏); Gao FP(高福平); Cui JS(崔金声)
刊名	APPLIED OCEAN RESEARCH
	2013-03
通讯作者邮箱	fpgao@imech.ac.cn
卷号	40 页码:50-59
关键词	piggyback pipelines vortex shedding swirling strength VIV Suppression
ISSN号	0141-1187
通讯作者	Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
产权排序	[Zang, Zhi-Peng; Gao, Fu-Ping; Cui, Jin-Sheng] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
中文摘要	The vortex shedding from near-bed piggyback pipelines in a steady flow has been investigated experimentally in a large water flume. A specially arranged PIV system with upward-illumination of pulsed laser arrays from the flume bottom was employed for the flow visualization and quantitative measurement of the lee-wake flow in a sub-critical regime around the piggyback pipelines in the proximity of a plane boundary. Based on dimensional analyses, a dimensionless maximum swirling strength (W-m) is used for analyzing the vortex shedding intensity and its frequency. Time-averaged swirling strength analyses indicate that the lee-wake patterns for the near-bed piggyback pipelines are dependent on the configuration factors, including the gap-to-diameter ratio (e/D), the spacing-to-diameter ratio (G/D), and the diameter ratio of two pipes (d/D), etc. The swirling strength in the lee-wake is obviously asymmetric for piggyback pipelines with bed proximity. For the fixed values of G/D and d/D, the maximum swirling strength decreases with the decrease of e/D. Moreover, for the examined G/D range (0 <= G/D <= 0.5), minimum values of W-m and corresponding VIV amplitude for the piggyback pipelines are evidently within the same range of spacing-to-diameter ratio G/D approximate to 0.05-0.20.
学科主题	流固耦合作用
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [51109202, 11232012]
原文出处	http://dx.doi.org/10.1016/j.apor.2013.01.001
语种	英语
WOS记录号	WOS:000316533800006
公开日期	2013-02-28
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/46877]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
推荐引用方式 GB/T 7714	Zang ZP,Gao FP,Cui JS. Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines[J]. APPLIED OCEAN RESEARCH,2013,40:50-59.
APA	Zang ZP,Gao FP,&Cui JS.(2013).Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines.APPLIED OCEAN RESEARCH,40,50-59.
MLA	Zang ZP,et al."Physical modeling and swirling strength analysis of vortex shedding from near-bed piggyback pipelines".APPLIED OCEAN RESEARCH 40(2013):50-59.