Incident flow effects on the performance of piezoelectric energy harvesters from galloping vibrations

被引：1
|
作者：
Abdessattar Abdelkefi [1 ]
Armanj Hasanyan [1 ]
Jacob Montgomery [1 ]
Duncan Hall [1 ]
Muhammad R.Hajj [1 ]
机构：
[1] Department of Engineering Science and Mechanics, Virginia Tech
来源：
Theoretical & Applied Mechanics Letters | 2014年 / 4卷 / 02期
关键词：
energy harvesting; galloping oscillations; incident flow effects; experimental measurements;
D O I：
暂无
中图分类号：
O357.5 [湍流（紊流）];
学科分类号：
080103 ; 080704 ;
摘要：
In this paper, we investigate experimentally the concept of energy harvesting from galloping oscillations with a focus on wake and turbulence effects.The harvester is composed of a unimorph piezoelectric cantilever beam with a square cross-section tip mass. In one case, the harvester is placed in the wake of another galloping harvester with the objective of determining the wake effects on the response of the harvester. In the second case, meshes were placed upstream of the harvester with the objective of investigating the effects of upstream turbulence on the response of the harvester. The results show that both wake effects and upstream turbulence significantly affect the response of the harvester. Depending on the spacing between the two squares and the opening size of the mesh, wake and upstream turbulence can positively enhance the level of the harvested power.
引用
收藏
页码：97 / 102
页数：6
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