风激钝体挠曲电效应悬臂结构能量收集器阵列优化试验研究  

Experimental study on optimization of wind-induced bluff-flexoelectric cantilever energy harvester array

作　　者：骆英[1] 廖兴川 LUO Ying;LIAO Xingchuan(Faculty of Civil Engineering and Mechanics,Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]江苏大学土木工程与力学学院,江苏镇江212013

出　　处：《实验力学》2025年第1期11-20,共10页Journal of Experimental Mechanics

基　　金：国家自然科学基金面上项目(12072133)。

摘　　要：针对无线传感器网络(Wireless Sensor Networks,WSNs)节点对稳定能量供应的需求,提出了一种基于挠曲电效应的风激钝体悬臂结构驰振风能收集器,并通过数值模拟和风洞试验研究了风能收集器及其阵列的输出电功率特性。结果表明:能量收集阵列的交错阵列优于串联阵列;阵列横向间距过小会抑制下游钝体剪切流的形成,从而减弱其振动;阵列纵向间距过小会抑制上游钝体的涡分离,使其振幅减小。合理选择能量收集器的阵列方案,可以增强钝体的振幅,提高能量收集装置阵列的效率。To address the need for a stable energy supply of wireless sensor networks(WSNs)nodes,a wind energy collector with a wind-induced bluff body cantilevering structure based on the flexoelectric effect was developed in this paper.Output power performances of the wind energy collector and its array were studied through numerical simulation and wind tunnel testing.The results show that the staggered array of energy harvesting arrays has advantages over the series array.Too small transverse spacing of arrays will inhibit the formation of shear flow on the downstream bluff body and thus weaken its vibration;too small longitudinal spacing of arrays will inhibit the vortex detachment of the upstream bluff body and reduce its amplitude.Reasonable selection of the array scheme of the energy collector can enhance the amplitude of the bluff body and improve the efficiency of the energy harvesting device array.

关 键 词：挠曲电效应 驰振 钝体悬臂梁能量收集器 流固耦合 风洞 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] O355[理学—流体力学]