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

Abdessattar Abdelkefi, Armanj Hasanyan, Jacob Montgomery, Duncan Hall, Muhammad R. Hajj

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

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.

Original languageEnglish
Article number022002
Pages (from-to)22002
Number of pages1
JournalTheoretical and Applied Mechanics Letters
Volume4
Issue number2
DOIs
StatePublished - 2014

Keywords

  • Energy harvesting
  • Experimental measurements
  • Galloping oscillations
  • Incident flow effects

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