
Proceedings Paper
A study of several vortex-induced vibration techniques for piezoelectric wind energy harvestingFormat | Member Price | Non-Member Price |
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Paper Abstract
This paper discusses a preliminary study on harnessing energy from piezoelectric transducers by using bluff body and
vortex-induced vibration phenomena. Structures like bridges and buildings tend to deform and crack due to chaotic
fluid-structure interactions. The rapid variation of pressure and velocity can be tapped and used to power structural
health monitoring systems. The proposed device is a miniature, scalable wind harvesting device. The configuration
consists of a bluff body with a flexible piezoelectric cantilever attached to the trailing edge. Tests are run for different
characteristic dimensions or shapes for the bluff body and optimized for maximum power over a wide range of flow
velocities. The main motive here is to seek a higher synchronized region of frequencies for the oscillation amplitudes.
The multi-physics software package COMSOL is used to vary the design parameters to optimize the configuration and to
identify the significant parameters in the design. The simulation results obtained show a wider lock-in bandwidth and
higher average power for the cylindrical bluff body compared to the other two bluff body shapes investigated, the
greatest average power being 0.35mW at a Reynolds number of 900, beam length of 0.04m, and bluff body diameter of
0.02m.
Paper Details
Date Published: 27 April 2011
PDF: 13 pages
Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79770F (27 April 2011); doi: 10.1117/12.878493
Published in SPIE Proceedings Vol. 7977:
Active and Passive Smart Structures and Integrated Systems 2011
Mehrdad N. Ghasemi-Nejhad, Editor(s)
PDF: 13 pages
Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79770F (27 April 2011); doi: 10.1117/12.878493
Show Author Affiliations
Vishak Sivadas, The George Washington Univ. (United States)
Adam M. Wickenheiser, The George Washington Univ. (United States)
Published in SPIE Proceedings Vol. 7977:
Active and Passive Smart Structures and Integrated Systems 2011
Mehrdad N. Ghasemi-Nejhad, Editor(s)
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