IMECH-IR  > 流固耦合系统力学重点实验室
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); Gao, FP (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationAPPLIED OCEAN RESEARCH
2013-03
Volume40Pages:50-59
ISSN0141-1187
AbstractThe 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.
KeywordPiggyback Pipelines Vortex Shedding Swirling Strength Viv Suppression
Subject Area流固耦合作用
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000316533800006
Funding OrganizationNational Natural Science Foundation of China [51109202, 11232012]
DepartmentLMFS流固土耦合力学(LHO)
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46877
Collection流固耦合系统力学重点实验室
Corresponding AuthorGao, FP (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zang ZP,Gao FP,Cui JS,et al. 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,&Gao, FP .(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.
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