Study for the cross-flow coupling mechanism of tandem cylinder groups at low Reynolds number
Tu, Jiahuang1; He, Zhancheng1; Tan, Xiaoling2; Wang, Guanyu1; Xu, Jixiang3; Xu, Yuwang4
2022-09-15
发表期刊Ocean Engineering
ISSN0029-8018
卷号260
摘要A numerical analysis of flow-induced vibrations for tandem cylinder groups which include two and three tandem cylinders with a spacing ratio of L/D = 5.5 (where L is the distance between the circular cylinders and D is the circular diameter) in planar shear flow is carried out. The cylinders can only vibrate freely in the cross-flow direction. A finite element method called four-step semi-implicit characteristic-based split (4-SICBS) is used to solve the Navier-Stokes equation. On the other hand, in order to maximize the oscillation response of the dynamic system, the damping ratio of it is ξ = 0. And the mass ratio of structure is set to mr = 2.0. The four main parameters, such as the number of cylinders (Num = 2, 3), Reynolds number (Re = 100, 160), the shear ratio (k = 0.0, 0.05, 0.1) as well as the reduced velocity (Ur = 3–30) are mainly studied the dynamic behaviors, frequency and spectrum characteristics, phase characteristics as well as energy characteristics of tandem cylinder groups. The results show that vibration responses of the upstream cylinders in tandem cylinder groups are similar to that of a single cylinder, while the parameters play a key role in flow-induced vibrations of the midstream and downstream cylinders. As Re = 100, the downstream cylinder of two tandem cylinders and the midstream cylinder of three tandem cylinders are in the state of increasing and then decreasing, and the downstream cylinder of three tandem cylinders has a larger vibration response with the change of k. As k = 0.1, the amplitude drops to zero with the increase of Ur. In addition, the situation becomes more complicated with the increase of Re. For the downstream cylinder of three tandem cylinders at Re = 160, there are two peaks of the cross-flow amplitude. The oscillation remains strong at larger Ur for the case of k = 0.1. Finally, the interactions between cylinders are revealed, together with the vortex dynamic mechanism underlying the oscillation characteristics of tandem cylinders exposed to planar shear flow. © 2022 Elsevier Ltd
关键词Circular cylinders Navier Stokes equations Oscillating cylinders Oscillating flow Reynolds number Shear flow Vibration analysis Vortex flow Cross flows Cylinder groups Downstream cylinders Dynamic mechanism Planar shear flow Tandem cylinder Tandem cylinder group Vibration response Vortex dynamic mechanism Vortex dynamics
DOI10.1016/j.oceaneng.2022.112004
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:000863042300004
出版者Elsevier Ltd
EI入藏号20223012405346
EI主题词Finite element method
EI分类号601.1 Mechanical Devices - 631.1 Fluid Flow, General - 921.2 Calculus - 921.6 Numerical Methods
来源库WOS
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被引频次:1[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/159394
专题土木工程学院
通讯作者Xu, Yuwang
作者单位1.Xiangtan Univ, Coll Civil Engn, Xiangtan 411105, Hunan, Peoples R China;
2.Zhongye Changtian Int Engn Co Ltd, Changsha 410015, Peoples R China;
3.Lanzhou Univ Technol, Dept Civil Engn, Lanzhou 730050, Peoples R China;
4.Shanghai Jiao Tong Univ, State Key Lab Ocean Engn, Shanghai 200240, Peoples R China
第一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,He, Zhancheng,Tan, Xiaoling,et al. Study for the cross-flow coupling mechanism of tandem cylinder groups at low Reynolds number[J]. Ocean Engineering,2022,260.
APA Tu, Jiahuang,He, Zhancheng,Tan, Xiaoling,Wang, Guanyu,Xu, Jixiang,&Xu, Yuwang.(2022).Study for the cross-flow coupling mechanism of tandem cylinder groups at low Reynolds number.Ocean Engineering,260.
MLA Tu, Jiahuang,et al."Study for the cross-flow coupling mechanism of tandem cylinder groups at low Reynolds number".Ocean Engineering 260(2022).
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