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Simulation and Experimental Investigation of an Energy Harvester Utilizing Flow-Induced Vibration

[+] Author Affiliations
Mostafa G. Abd El-Mageed, Mohamed Elaraby

Cairo University, Cairo, Egypt

Mustafa Arafa

American University in Cairo, Cairo, Egypt

Paper No. DETC2014-34596, pp. V008T11A089; 9 pages
doi:10.1115/DETC2014-34596
From:
  • ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 8: 26th Conference on Mechanical Vibration and Noise
  • Buffalo, New York, USA, August 17–20, 2014
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4641-4
  • Copyright © 2014 by ASME

abstract

This work exploits harvesting energy from fluid flow by means of a device that is inserted in the flow stream. The device is designed to exhibit desirable hydrodynamic characteristics that advocate flow-induced oscillations, which can be converted into useful power. In this context, a cantilever beam carrying an open semicircular cylinder at its tip is placed in a flowing water stream. The hydrodynamic loads cause the beam to undergo galloping motions in the transverse direction. The beam, which is made up of laminated polymer/polyvinylidene difluoride (PVDF) layers, extracts electrical energy from the sustained cyclic mechanical motion. A numerical model is developed to predict the system dynamics in terms of its design parameters. The results are supported by experimental measurements of the output voltage over a range of water speeds and load resistance.

Copyright © 2014 by ASME

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