Interaction of side-by-side fluidic harvesters in fractal grid-generated turbulence

Kevin Ferko; David Lachendro; Nick Chiappazzi; Amir H. Danesh-Yazdi

doi:10.1117/12.2300664

15 March 2018 Interaction of side-by-side fluidic harvesters in fractal grid-generated turbulence

Kevin Ferko, David Lachendro, Nick Chiappazzi, Amir H. Danesh-Yazdi

Proceedings Volume 10595, Active and Passive Smart Structures and Integrated Systems XII; 105951E (2018) https://doi.org/10.1117/12.2300664
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2018, Denver, Colorado, United States

Abstract

While the vast 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. This is especially true for grid-generated turbulence. In this paper, the interaction of two side-by-side fluidic harvesters from a passive fractal grid-generated turbulent flow is considered. The fractal grid has been shown to significantly increase the turbulence generated in the flow which is the source of the vibration of the piezoelectric beams. In this experimental study, the influence of four parameters has been investigated: Beam lengths and configurations, mean flow velocity, distance from the grid and gap between the two beams. Experimental results show that the piezoelectric harvesters in fractal grid turbulence are capable of producing at least the same amount of power as those placed in passive rectangular grids with a larger pressure loss, allowing for a potentially significant increase in the efficiency of the energy conversion process, even though more experiments are required to study the behavior of the beams in homogeneous, fractal grid-generated turbulence.

Conference Presentation

Citation Download Citation

Kevin Ferko, David Lachendro, Nick Chiappazzi, and Amir H. Danesh-Yazdi "Interaction of side-by-side fluidic harvesters in fractal grid-generated turbulence", Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105951E (15 March 2018); https://doi.org/10.1117/12.2300664

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