IMECH-IR  > 流固耦合系统力学重点实验室
Effect of peak perforation on flow past a conic cylinder at Re=100: drag lift and Strouhal number
Lin LM(林黎明); Zhong XF(钟兴福); Wu YX(吴应湘)
Source PublicationCHINA OCEAN ENGINEERING
2017
Volume31Issue:3Pages:330-340
ISSN0890-5487
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.

KeywordVortex-induced Vibration Perforation Conic Disturbance Drag Lift Strouhal Number
DOI10.1007/s13344-017-0039-9
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000402819500009
WOS KeywordVortex-induced Vibration ; Circular-cylinders ; Suppression ; Reduction
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Civil ; Engineering, Ocean ; Engineering, Mechanical ; Water Resources
Funding OrganizationNational Key Scientific Instrument and Equipment Development Program of China(2011YQ120048)
CSCD IDCSCD:6001767
DepartmentLMFS多相流及流固耦合(LHO)
ClassificationQ4
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/60604
Collection流固耦合系统力学重点实验室
Corresponding AuthorLin LM(林黎明)
Recommended Citation
GB/T 7714
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,2017,31(3):330-340.
APA Lin LM,Zhong XF,&Wu YX.(2017).Effect of peak perforation on flow past a conic cylinder at Re=100: drag lift and Strouhal number.CHINA OCEAN ENGINEERING,31(3),330-340.
MLA Lin LM,et al."Effect of peak perforation on flow past a conic cylinder at Re=100: drag lift and Strouhal number".CHINA OCEAN ENGINEERING 31.3(2017):330-340.
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