Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration

doi:10.1016/j.oceaneng.2023.116221

IMECH-IR > 流固耦合系统力学重点实验室

	Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration
	Ma YX(马烨璇)1; Song, Zhiyou 2; Xu JY(许晶禹)1 ; Xu, Wanhai 2
通讯作者	Xu, Wanhai(xuwanhai@tju.edu.cn)
发表期刊	OCEAN ENGINEERING
	2023-12-15
卷号	290 页码:19
ISSN	0029-8018
摘要	A system consisting of four cylinders positioned in the quadrilateral arrangement represents the prevalent and fundamental constituent within pipe bundles and tube banks in numerous engineering scenarios. This research presents a laboratorial study on flow-induced vibration (FIV) exhibited by four flexible cylinders positioned within a square geometric arrangement. The uniform flows were produced by a carriage on the top of a towing tank. Considering flow velocities and structural parameters, Reynolds number could reach 16000. The spacing between the cylindrical centres was selected as 6.0 D (D denotes the outer diameter of cylinders), and two typical incidence angles 0 degrees and 45 degrees were examined. For each flexible cylinder model, strain gages at seven distinct measuring positions were utilized to collect the oscillation data in cross-flow (CF) and in-line (IL) directions. Principal vibration modes, response frequencies, response amplitudes and motion trajectories were presented to understand the FIV features. For incidence angles 0 degrees, considering the four flexible cylinders as two sets of tandem cylinders arranged in parallel is not appropriate due to the proximate effect. The behaviours of the two upstream cylinders resembles those of the pair of cylinders positioned in a side-by-side configuration, whereas behaviours for the downstream cylinders are influenced by wake interference generated from leading cylinders. IL response frequencies decrease to the values close to the CF response frequencies, resulting in the elliptical-shaped motion trajectories with large IL displacements. For incidence angles 45 degrees, the upstream cylinder displays characteristics akin to those of a solitary cylinder experiencing vortex-induced vibration (VIV). Reactions for the central pair of cylinders result from the amalgamation of VIV and wake-induced flutter. While, reactions observed for down-stream cylinder are characterized by low frequencies, significant IL displacements and more chaotic trajectories.
关键词	Flexible cylinder Square configuration Flow-induced vibrations Incidence angle Multi-mode
DOI	10.1016/j.oceaneng.2023.116221
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001125248600001
关键词[WOS]	VORTEX-INDUCED VIBRATIONS ; WAKE-INDUCED VIBRATIONS ; CIRCULAR-CYLINDERS ; CROSS-FLOW ; TANDEM ARRANGEMENT ; EQUISPACED CYLINDERS ; HYDRODYNAMIC FEATURES ; INTERFERENCE ; PATTERN ; RISER
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
资助项目	National Natural Science Foundation of China, China[U2106223] ; National Natural Science Foundation of China, China[51979163] ; China Postdoctoral Science Foundation, China[2023M733588] ; Special Research Assistant Programs Foundation of the Chinese Academy of Sciences, China[E3XM040201]
项目资助者	National Natural Science Foundation of China, China ; China Postdoctoral Science Foundation, China ; Special Research Assistant Programs Foundation of the Chinese Academy of Sciences, China
论文分区	一类
力学所作者排名	1
RpAuthor	Xu, Wanhai
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/93747
专题	流固耦合系统力学重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China
推荐引用方式 GB/T 7714	Ma YX,Song, Zhiyou,Xu JY,et al. Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration[J]. OCEAN ENGINEERING,2023,290:19.
APA	马烨璇,Song, Zhiyou,许晶禹,&Xu, Wanhai.(2023).Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration.OCEAN ENGINEERING,290,19.
MLA	马烨璇,et al."Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration".OCEAN ENGINEERING 290(2023):19.

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