Piezoelectric energy harvesting from vertical piezoelectric beams in the horizontal fluid flows

Abstract

Abstract. Piezoelectric Energy Harvesting (PEH) of uid-ow energy has attracted signi cant attention throughout the last decade. In the previous PEH from uid ow, a piezoelectric beam was placed behind a blu body, such as circular cylinders. Hence, the piezoelectric beam oscillated due to the vortex shedding behind of the blu body. Subsequently, this vibration generated voltage in the beam. In many engineering vehicles such as airplanes, the strong vortex shedding caused by blu body was destructive and reduced the e ciency of devices; therefore; it was not proper to attach a blu body to these devices. In this paper, PEH from vertical beams in low speeds and high-speed ows is investigated. The current work shows that in contrast to low-speed ows, the extracted power from vertical beam in high-speed ows is considerable. Moreover, as a practical example of vertical beam in high-speed ows, the energy harvesting from piezoelectric Gurney ap attached to an NACA2412 airfoil is investigated. Finally, this study proposes a piezoelectric vertical beam with attached end cylinder as an energy harvester in the lowspeed ows. It is indicated that this device has strong vibration and, therefore, produces a remarkable electrical power.

A review of energy harvesting using piezoelectric materials: state-of-the-art a decade later (2008–2018)

“…As a result of turbulence created around and in the wake of the cylinder, the piezoelectric beam could vibrate in the direction normal to the flow, and it was shown that 0.035 mW of average power could be generated at a wind speed of 5 m s −1 . Similar results were found by Amini et al in 2017 [340] for a comparable piezoelectric device.…”

Bluff body with built‐in piezoelectric cantilever for flow‐induced energy harvesting

“…[11][12][13][14][15][16][17] Fluid flow ubiquitously exists in the environment and could be converted to structural vibrations. 18,19 Based on the mechanism of flow-induced vibration, researchers have proposed various aeroelastic PEHs. 20,21 Amini et al 22 presented an accurate numerical method for modelling a PEH placed in fluid flow.…”

“…Fluid flow ubiquitously exists in the environment and could be converted to structural vibrations . Based on the mechanism of flow‐induced vibration, researchers have proposed various aeroelastic PEHs .…”

A Design of mass-spring type piezoelectric energy harvesting

“…The flow-induced vibration is often used as an energy source for piezoelectric energy harvesters. Amini et al [15] proposes a piezoelectric vertical beam with attached end cylinder as an energy harvester in the lowspeed flows. Piezoelectric energy harvesters based on vortexinduced vibration and galloping [16][17][18][19] have been extensively studied in the past several years.…”