TY - JOUR
T1 - Incident flow effects on the performance of piezoelectric energy harvesters from galloping vibrations
AU - Abdelkefi, Abdessattar
AU - Hasanyan, Armanj
AU - Montgomery, Jacob
AU - Hall, Duncan
AU - Hajj, Muhammad R.
N1 - Publisher Copyright:
© 2014 The Chinese Society of Theoretical and Applied Mechanics.
PY - 2014
Y1 - 2014
N2 - In this paper, we investigate experimentally the concept of energy harvesting from galloping oscillations with a focus on wake and turbulence effects. The harvester is composed of a unimorph piezoelectric cantilever beam with a square cross-section tip mass. In one case, the harvester is placed in the wake of another galloping harvester with the objective of determining the wake effects on the response of the harvester. In the second case, meshes were placed upstream of the harvester with the objective of investigating the effects of upstream turbulence on the response of the harvester. The results show that both wake effects and upstream turbulence significantly affect the response of the harvester. Depending on the spacing between the two squares and the opening size of the mesh, wake and upstream turbulence can positively enhance the level of the harvested power.
AB - In this paper, we investigate experimentally the concept of energy harvesting from galloping oscillations with a focus on wake and turbulence effects. The harvester is composed of a unimorph piezoelectric cantilever beam with a square cross-section tip mass. In one case, the harvester is placed in the wake of another galloping harvester with the objective of determining the wake effects on the response of the harvester. In the second case, meshes were placed upstream of the harvester with the objective of investigating the effects of upstream turbulence on the response of the harvester. The results show that both wake effects and upstream turbulence significantly affect the response of the harvester. Depending on the spacing between the two squares and the opening size of the mesh, wake and upstream turbulence can positively enhance the level of the harvested power.
KW - Energy harvesting
KW - Experimental measurements
KW - Galloping oscillations
KW - Incident flow effects
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U2 - 10.1063/2.1402202
DO - 10.1063/2.1402202
M3 - Article
AN - SCOPUS:84947553658
VL - 4
SP - 22002
JO - Theoretical and Applied Mechanics Letters
JF - Theoretical and Applied Mechanics Letters
IS - 2
M1 - 022002
ER -