A scalable concept for micropower generation using flow-induced self-excited oscillations

D. St. Clair, A. Bibo, V. R. Sennakesavababu, M. F. Daqaq, G. Li

Research output: Contribution to journalArticle

Abstract

Inspired by music-playing harmonicas that create tones via oscillations of reeds when subjected to air blow, this paper entails a concept for microwind power generation using flow-induced self-excited oscillations of a piezoelectric beam embedded within a cavity. Specifically, when the volumetric flow rate of air past the beam exceeds a certain threshold, the energy pumped into the structure via nonlinear pressure forces offsets the system's intrinsic damping setting the beam into self-sustained limit-cycle oscillations. The vibratory energy is then converted into electricity through principles of piezoelectricity. Experimental and theoretical results are presented demonstrating the feasibility of the proposed concept.

Original languageEnglish (US)
Article number144103
JournalApplied Physics Letters
Volume96
Issue number14
DOIs
StatePublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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