Energy Harvesting in the Wake of An Inverted C-Shaped Bluff Body

作     者：WANG Jun-lei LI Shen-fang Md.Mahbub ALAM ZHU Hong-jun HU Guo-biao WANG Jun-lei;LI Shen-fang;Md.Mahbub ALAM;ZHU Hong-jun;HU Guo-biao

作者机构：School of Mechanical and Power EngineeringZhengzhou UniversityZhengzhou 450000China Center for Turbulence ControlHarbin Institute of Technology(Shenzhen)Shenzhen 518055China State Key Laboratory of Oil and Gas Reservoir Geology and ExploitationSouthwest Petroleum UniversityChengdu 610500China Internet of Things ThrustThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400China 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2024年第38卷第1期

页      面：68-80页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(Grant Nos.51977196,52277227,and52305135) Open Project of Henan Key Laboratory of Intelligent Manufacturing of Mechanical Equipment,Zhengzhou University of Light Industry(Grant No.IM202302) the Natural Science Foundation of Excellent Youth of Henan Province(Grant No.222300420076) the Science and Technology Research&Development Joint Foundation of Henan Province-Young Scientists(Grant No.225200810099) the Program for Science&Technology Innovation Talents in Universities of Henan Province(Grant No.23HASTIT010) the National Center for International Research of Subsea Engineering Technology and Equipment(Grant No.3132023366) 

主　　题：wake-induced vibration vortex-induced vibration galloping energy harvesting bluff body 

摘      要：This paper proposes a novel wake-induced vibration(WIV)-based energy harvesting system consisting of two bluff *** inverted C-shaped bluff body is stationary installed at the upstream position to generate an interference wake street,and a cylinder bluff body equipped with a transducer is elastically suspended at the downstream position to harness WIV *** hydrodynamics and energy harvesting(EH)performance of the proposed system are investigated via experimental *** reduced velocity(U*)ranging from 2 to 14(the corresponding Reynolds number ranging from 15100 to 106200)is considered in the present *** is found that the wake generated by the inverted C-shaped bluff body significantly affects the EH *** the opening angle(α)of the C-shaped bluff body increases the vibration amplitude of the downstream cylinder,thereby increasing the harvested *** the spacing(L)between two bluff bodies is two times the cylinder diameter(D),the wake-induced vibration(WIV)mode is observed,while the combined WIV and wake galloping(WG)mode occurs whenαis 150°,and L equals 3D or *** average drag coefficient becomes negative when L is 2D,3D,or *** carefully configuring a C-shaped bluff body,the wake generated by it can bring an augmenting effect on the vibration of the downstream EH *** example,the RMS power output of the proposed EH system reaches a maximum of 0.31 W at U*=8 and L=4D,which is 300%greater than that of its traditional ***,after a number of case stud-ies,it is identified that the proposed EH system can achieve the best performance whenαis 150°and L=2D.