Dynamic responses and flow-induced vibration mechanism of three tandem circular cylinders in planar shear flow

doi:10.1016/j.oceaneng.2020.107022

IR > 土木工程学院

	Dynamic responses and flow-induced vibration mechanism of three tandem circular cylinders in planar shear flow
	Tu, Jiahuang 1,2; Tan, Xiaoling 1; Deng, Xuhui 1,2; Han, Zhaolong 3; Zhang, Min4 ; Li, Zhanjie 5; Xu, Jixiang6 ; Zhang, Ping 1
	2020-03-01
发表期刊	Ocean Engineering
ISSN	00298018
卷号	199
摘要	Numerical study is conducted on flow-induced vibrations (FIVs) of three circular cylinders arranged in tandem with spacing ratio L/D = 5.5 in planar shear flow. The cylinders are free to vibration in both in-line and transverse directions. A four-step semi-implicit Characteristic-based split (4-SICBS) finite element method is adopted to solve the governing Navier-Stokes equations. The mass ratio of each cylinder is set as mr = 2.0, and the structural damping ratio as zero to maximize the flow-induced responses of the cylinders. The effects of three main parameters, such as the Reynolds number (Re = 80, 120, 160), the shear ratio (k = 0.0, 0.05, 0.1), and the reduced velocity (Ur = 3–21), are considered. The changes of vibration amplitudes, frequency characteristics, motion trajectories and flow characteristics are analyzed. The results show that, the dynamic responses of the upstream cylinder are similar to those of an isolated cylinder. The Re, k and Ur play a more important role in the FIVs of the midstream and downstream cylinders. As Re ≤ 120, the dynamic responses of the cylinders change slightly with the increasing of Re, while they present a dramatic increase because of the unstable flow characteristic at Re = 160. Additionally, with the increasing of Re, the vibration response mechanism of the cylinders in the in-line direction will change from resonance phenomenon into the vortex interference. For the motion orbits of the circular cylinders, in additional to the eight-figure, raindrop, oval and irregular shape, the dual-raindrop, dual-eight and dual-oval sharp are observed. Finally, regarding the flow field, it is found that the interference of the wake vortex is highly affected by the shear ratio of the incoming flow, resulting in great changes on the wake pattern and dynamic responses. Especially, the "2T"wake pattern is observed. © 2020 Elsevier Ltd
关键词	Drops Dynamic response Finite element method Fluid structure interaction Navier Stokes equations Reynolds number Shear flow Vibration analysis Vortex flow Wakes Characteristic based splits Downstream cylinders Flow charac-teristics Flow induced vibrations Frequency characteristic Motion trajectories Resonance phenomena Vibration amplitude
DOI	10.1016/j.oceaneng.2020.107022
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
WOS记录号	WOS:000518873800008
出版者	Elsevier Ltd
EI入藏号	20200508117169
EI主题词	Circular cylinders
EI分类号	631.1 Fluid Flow, General - 921.2 Calculus - 921.6 Numerical Methods
来源库	Compendex
分类代码	631.1 Fluid Flow, General - 921.2 Calculus - 921.6 Numerical Methods
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115785
专题	土木工程学院图书馆
通讯作者	Han, Zhaolong; Zhang, Ping
作者单位	1.Xiangtan Univ, Coll Civil Engn & Mech, Xiangtan 411105, Hunan, Peoples R China; 2.Hunan Key Lab Geomech & Engn Safety, Xiangtan 411105, Peoples R China; 3.Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Shanghai 200240, Peoples R China; 4.Guilin Univ Technol, Coll Civil Engn & Architecture, Guilin 541004, Peoples R China; 5.SUNY Polytech Inst, Dept Engn, Utica, NY 13502 USA; 6.Lanzhou Univ Technol, Dept Civil Engn, Lanzhou 730050, Peoples R China
第一作者单位	土木工程学院
通讯作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Tu, Jiahuang,Tan, Xiaoling,Deng, Xuhui,et al. Dynamic responses and flow-induced vibration mechanism of three tandem circular cylinders in planar shear flow[J]. Ocean Engineering,2020,199.
APA	Tu, Jiahuang.,Tan, Xiaoling.,Deng, Xuhui.,Han, Zhaolong.,Zhang, Min.,...&Zhang, Ping.(2020).Dynamic responses and flow-induced vibration mechanism of three tandem circular cylinders in planar shear flow.Ocean Engineering,199.
MLA	Tu, Jiahuang,et al."Dynamic responses and flow-induced vibration mechanism of three tandem circular cylinders in planar shear flow".Ocean Engineering 199(2020).