A smart device for harnessing energy from aerodynamic flow fields

Daniel St Clair, Christopher Stabler, Mohammed Daqaq, Jian Luo, Gang Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this work, inspired by music playing harmonicas, we conduct a conceptual investigation of a coupled aero-electromechanical system for wind energy harvesting. The system consists of a piezoelectric cantilever unimorph structure embedded within an air chamber to mimic the vibration of the reeds in a harmonica when subjected to air flow. In principle, when wind blows into the air chamber, the air pressure in the chamber increases and bends the cantilever beam opening an air path between the chamber and the environment. When the volumetric flow rate of air past the cantilever is large enough, the energy pumped into the structure via the nonlinear pressure forces offset the intrinsic damping in the system setting the beam into self-sustained limit-cycle oscillations. These oscillations induce a periodic strain in the piezoelectric layer which produces a voltage difference that can be channeled into an electric load. Unlike traditional vibratory energy harvesters where the excitation frequency needs to match the resonant frequency of the device for efficient energy extraction, the nonlinearly coupled aero-elasto dynamics of this device guarantees autonomous vibration of the cantilever beam near its natural frequency as long as the volumetric flow rate is larger than a certain threshold. Experimental results are presented to demonstrate the ability of this device to harvest wind energy under normal wind conditions.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages377-381
Number of pages5
Volume11
ISBN (Print)9780791843840
DOIs
StatePublished - Jan 1 2010
EventASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009 - Lake Buena Vista, FL, United States
Duration: Nov 13 2009Nov 19 2009

Other

OtherASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009
CountryUnited States
CityLake Buena Vista, FL
Period11/13/0911/19/09

Fingerprint

Flow fields
Aerodynamics
Air
Cantilever beams
Wind power
Natural frequencies
Flow rate
Electric loads
Harvesters
Energy harvesting
Vibrations (mechanical)
Damping
Electric potential

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

Clair, D. S., Stabler, C., Daqaq, M., Luo, J., & Li, G. (2010). A smart device for harnessing energy from aerodynamic flow fields. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009 (Vol. 11, pp. 377-381). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE2009-12301

A smart device for harnessing energy from aerodynamic flow fields. / Clair, Daniel St; Stabler, Christopher; Daqaq, Mohammed; Luo, Jian; Li, Gang.

Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009. Vol. 11 American Society of Mechanical Engineers (ASME), 2010. p. 377-381.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Clair, DS, Stabler, C, Daqaq, M, Luo, J & Li, G 2010, A smart device for harnessing energy from aerodynamic flow fields. in Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009. vol. 11, American Society of Mechanical Engineers (ASME), pp. 377-381, ASME 2009 International Mechanical Engineering Congress and Exposition, IMECE2009, Lake Buena Vista, FL, United States, 11/13/09. https://doi.org/10.1115/IMECE2009-12301
Clair DS, Stabler C, Daqaq M, Luo J, Li G. A smart device for harnessing energy from aerodynamic flow fields. In Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009. Vol. 11. American Society of Mechanical Engineers (ASME). 2010. p. 377-381 https://doi.org/10.1115/IMECE2009-12301
Clair, Daniel St ; Stabler, Christopher ; Daqaq, Mohammed ; Luo, Jian ; Li, Gang. / A smart device for harnessing energy from aerodynamic flow fields. Proceedings of the ASME International Mechanical Engineering Congress and Exposition 2009, IMECE 2009. Vol. 11 American Society of Mechanical Engineers (ASME), 2010. pp. 377-381
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