Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration
文献类型：期刊论文
| 作者 | Ma, Yexuan2; Song, Zhiyou1; Xu, Jingyu2 ; Xu, Wanhai1; Xu JY(许晶禹)
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| 刊名 | OCEAN ENGINEERING
 |
| 出版日期 | 2023-12-15 |
| 卷号 | 290页码:19 |
| ISSN号 | 0029-8018 |
| 关键词 | Flexible cylinder Square configuration Flow-induced vibrations Incidence angle Multi-mode |
| DOI | 10.1016/j.oceaneng.2023.116221 |
| 通讯作者 | Xu, Wanhai(xuwanhai@tju.edu.cn) |
| 英文摘要 | 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. |
| WOS关键词 | VORTEX-INDUCED VIBRATIONS ; WAKE-INDUCED VIBRATIONS ; CIRCULAR-CYLINDERS ; CROSS-FLOW ; TANDEM ARRANGEMENT ; EQUISPACED CYLINDERS ; HYDRODYNAMIC FEATURES ; INTERFERENCE ; PATTERN ; RISER |
| 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] |
| WOS研究方向 | Engineering ; Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:001125248600001 |
| 资助机构 | National Natural Science Foundation of China, China ; China Postdoctoral Science Foundation, China ; Special Research Assistant Programs Foundation of the Chinese Academy of Sciences, China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/93746]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Xu, Wanhai |
| 作者单位 | 1.Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300350, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Yexuan,Song, Zhiyou,Xu, Jingyu,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 | Ma, Yexuan,Song, Zhiyou,Xu, Jingyu,Xu, Wanhai,&许晶禹.(2023).Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration.OCEAN ENGINEERING,290,19. |
| MLA | Ma, Yexuan,et al."Experiments on flow-induced vibration of four flexible cylinders with large aspect ratio in a square configuration".OCEAN ENGINEERING 290(2023):19. |
入库方式： OAI收割
来源：力学研究所
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