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IMECH-IR  > 流固耦合系统力学重点实验室(2012-)  > 期刊论文
Title:
Effect of peak perforation on flow past a conic cylinder at Re=100: drag lift and Strouhal number
Author: Lin LM(林黎明); Zhong XF(钟兴福); Wu YX(吴应湘)
Source: CHINA OCEAN ENGINEERING
Issued Date: 2017
Volume: 31, Issue:3, Pages:330-340
Abstract: A flow past a circular-section cylinder with a perforated conic shroud in which the perforation is located at the peak of the conic disturbance as the shroud installed on the cylinder and uniformly distributed with several circular holes is numerically simulated at a Reynolds number of 100. Two factors in the perforation are taken into account i.e. the attack angle relative to the direction of incoming flow and diameter of holes. The effect of such perforation on the drag lift and vortex-shedding frequency is mainly investigated. Results have shown that variation of the attack angle has a little effect especially on the drag and vortex-shedding frequency except in certain cases due to the varied vortex-shedding patterns in the near wake. The increasing hole diameter still exhibits a little effect on the drag and frequency of vortex shedding but really reduces the lift in particular at larger wavelength such as the lift reduction reaching almost 66%-68% after introducing the perforation.
Keyword: vortex-induced vibration ; perforation ; conic disturbance ; drag ; lift ; Strouhal number
Language: 英语
Indexed Type: SCI ; EI
DOI: 10.1007/s13344-017-0039-9
DOC Type: Article
WOS Subject: Engineering, Civil ; Engineering, Ocean ; Engineering, Mechanical ; Water Resources
WOS Subject Extended: Engineering ; Water Resources
WOS Keyword Plus: VORTEX-INDUCED VIBRATION ; CIRCULAR-CYLINDERS ; SUPPRESSION ; REDUCTION
WOS ID: WOS:000402819500009
ISSN: 0890-5487
Funder: National Key Scientific Instrument and Equipment Development Program of China(2011YQ120048)
Department: LMFS多相流及流固耦合(LHO)
First Institution (Yes or Not): True
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/60604
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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description.institution: Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China

Recommended Citation:
Lin LM,Zhong XF,Wu YX. Effect of peak perforation on flow past a conic cylinder at Re=100: drag lift and Strouhal number[J]. CHINA OCEAN ENGINEERING,2017-01-01,31(3):330-340.
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