Flapping vortex dynamics of two coupled side-by-side flexible plates submerged in the wake of a square cylinder  

作　　者：Bin Xu Hao Wang Weibin Zhang Yilin Deng Xi Shen Desheng Zhang B.P.M.(Bart) van Esch 

机构地区：[1]Research Center of Fluid Machinery Engineering and Technology, Jiangsu University,301 Xuefu Road,Zhenjiang 212013,Jiangsu,China [2]Key Laboratory of Fluid and Power Machinery(Xihua University), Ministry of Education,Chengdu 610039,Sichuan,China [3]Institute for Energy Research, Jiangsu University,301 Xuefu Road,Zhenjiang 212013,Jiangsu,China [4]Eindhoven University of Technology,P.O. Box 513, Eindhoven 5600MB, The Netherlands

出　　处：《International Journal of Fluid Engineering》2024年第1期40-55,共16页国际流体工程(英文)

基　　金：co-supported by the National Natural Science Foundation of China(Grant No.U2106225);the Open Research Subject of Key Laboratory of Fluid and Power Machinery(Xihua University),Ministry of Education(Grant No.LTDL-2023003);the Outstanding Youth Foundation of Jiangsu Province of China(Grant No.BK20211547);the Excellent Scientific and Technological Innovation Team Project in Colleges and Universities of Jiangsu Province[Grant No.SKJ(2021)-1];the Natural Science Foundation of Jiangsu Province(Grant No.21KJA470002);the Senior Talent Foundation of Jiangsu University(Grant No.18JDG034)

摘　　要：The flapping vortex dynamics of two flexible plates submerged side-by-side in the wake of a square cylinder are investigated through a two-way fluid–structure interaction(FSI) simulation. The gap between the two plates can stabilize wakes, lengthen vortex formation,elongate vortices, suppress vortex shedding, and decrease hydrodynamic forces. The numerical results indicate that the two flexible plates can exhibit four distinct modes of coupled motion: out-of-phase flapping, in-phase flapping, transition flapping, and decoupled flapping,depending on the gap spacing. Additionally, it is discovered that each of the four coupling modes has a unique pattern of vortex development. The findings of this study should proved valuable in the design of FSI-based piezoelectric energy harvesters utilizing cylinder–plate systems.

关 键 词：VORTEX CYLINDER SUBMERGED 

分 类 号：O35[理学—流体力学]