TY - GEN
T1 - Average power output and the power law
T2 - Active and Passive Smart Structures and Integrated Systems XII 2019
AU - Ferko, Kevin
AU - Chiappazzi, Nicholas
AU - Gong, Jiawei
AU - Danesh-Yazdi, Amir H.
N1 - Funding Information:
This work has been partly supported by the National Science Foundation under Grant No. CBET 1033117, the Multi-Campus Research Experience for Undergraduates at Penn State University and the Undergraduate Research Grant at Penn State Behrend. We are also grateful to Innovation Commons at Penn State Behrend for their support in 3D printing the fractal grid design.
Publisher Copyright:
© 2019 Copyright SPIE.
PY - 2019
Y1 - 2019
N2 - While the majority of the literature in energy harvesting is dedicated to resonant harvesters, non-resonant harvesters, especially those that use turbulence-induced vibration to generate energy, have not been studied in as much detail primarily due to their comparatively small power output, general non-tunability and difficulty in associating flow conditions to harvester behavior. In this extensive study, we look at the behavior of piezoelectric cantilever beams in different types of grid turbulence with the intention of identifying trends in the harvester output. Our results show that the power-law decay of the harvester output that had previously been observed for rectangular grids holds for a wide variety of fractal grids as well. Additionally, experimental data shows that the average harvester output in grid turbulence follows a power-law growth with respect to the mean flow velocity for relative short and stiff piezoelectric beams.
AB - While the majority of the literature in energy harvesting is dedicated to resonant harvesters, non-resonant harvesters, especially those that use turbulence-induced vibration to generate energy, have not been studied in as much detail primarily due to their comparatively small power output, general non-tunability and difficulty in associating flow conditions to harvester behavior. In this extensive study, we look at the behavior of piezoelectric cantilever beams in different types of grid turbulence with the intention of identifying trends in the harvester output. Our results show that the power-law decay of the harvester output that had previously been observed for rectangular grids holds for a wide variety of fractal grids as well. Additionally, experimental data shows that the average harvester output in grid turbulence follows a power-law growth with respect to the mean flow velocity for relative short and stiff piezoelectric beams.
UR - https://www.scopus.com/pages/publications/85069770689
UR - https://www.scopus.com/inward/citedby.url?scp=85069770689&partnerID=8YFLogxK
U2 - 10.1117/12.2514293
DO - 10.1117/12.2514293
M3 - Conference contribution
AN - SCOPUS:85069770689
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Active and Passive Smart Structures and Integrated Systems XII
A2 - Erturk, Alper
PB - SPIE
Y2 - 4 March 2019 through 7 March 2019
ER -