A review on flow energy harvesters based on flapping foils

Xiao, Qing; Zhu, Qiang

doi:10.1016/j.jfluidstructs.2014.01.002

Cited by 333 publications

(141 citation statements)

References 52 publications

Supporting

Mentioning

139

Contrasting

Unclassified

Order By: Relevance

“…FIV, on the other hand, could also find applications in energy harvesting and vibration control. Comprehensive reviews on this topic are given by Xiao & Zhu (2014) and Young, Lai & Platzer (2014).…”

mentioning

confidence: 99%

Experimental investigation of flow-induced vibration of a rotating circular cylinder

et al. 2017

View full text Add to dashboard Cite

OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao.univ-toulouse.fr/ Eprints ID : 18605 While flow-induced vibration of bluff bodies has been extensively studied over the last half-century, only limited attention has been given to flow-induced vibration of elastically mounted rotating cylinders. Since recent low-Reynolds-number numerical work suggests that rotation can enhance or suppress the natural oscillatory response, the former could find applications in energy harvesting and the latter in vibration control. The present experimental investigation characterises the dynamic response and wake structure of a rotating circular cylinder undergoing vortex-induced vibration at a low mass ratio (m * = 5.78) over the reduced velocity range leading to strong oscillations. The experiments were conducted in a free-surface water channel with the cylinder vertically mounted and attached to a motor that provided constant rotation. Springs and an air-bearing system allow the cylinder to undertake low-damped transverse oscillations. Under cylinder rotation, the normalised frequency response was found to be comparable to that of a freely vibrating non-rotating cylinder. At reduced velocities consistent with the upper branch of a non-rotating transversely oscillating cylinder, the maximum oscillation amplitude increased with non-dimensional rotation rate up to α ≈ 2. Beyond this, there was a sharp decrease in amplitude. Notably, this critical value corresponds approximately to the rotation rate at which vortex shedding ceases for a non-oscillating rotating cylinder. Remarkably, at α = 2 there was approximately an 80 % increase in the peak amplitude response compared to that of a non-rotating cylinder. The observed amplitude response measured over the Reynolds-number range of (1100 Re 6300) is significantly different from numerical predictions and other experimental results recorded at significantly lower Reynolds numbers.

show abstract

mentioning

confidence: 99%

Experimental investigation of flow-induced vibration of a rotating circular cylinder

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The focus in this work is on the passive designs where the oscillations of the wing section are determined by the fluid-structure interaction. In addition, those EH designs were developed exploiting either the flapping motion of the aerofoil based on various mechanisms [114] or the deformation of the supporting devices due to the aerofoils vibrations [115].…”

Section: Limit Cycle Oscillations Of Wing Sectionsmentioning

confidence: 99%

Energy harvesting by means of flow-induced vibrations on aerospace vehicles

Ronch

et al. 2016

Progress in Aerospace Sciences

140

View full text Add to dashboard Cite

This paper reviews the design, implementation, and demonstration of energy harvesting devices that exploit flow-induced vibrations as the main source of energy.Starting with a presentation of various concepts of energy harvesters that are designed to benefit from a general class of flow-induced vibrations, specific attention is then given at those technologies that may offer, today or in the near future, a potential benefit to extend the operational capabilities and to monitor critical parameters of

show abstract

“…The overall power extraction (i.e. the amount of power that can be harvested by the system without considering mechanical loss (Xiao and Zhu, 2014)) PðtÞ ¼ YðtÞdh=dt þ MðtÞdθ=dt, and its time-averaged value P ¼ 1=T…”

Section: Governing Equations and Energy Harvesting Performancementioning

confidence: 99%

“…Through a stability analysis of the wake using the Orr-Sommerfeld equation, it was found that the occurrence of maximum efficiency coincided with the triggering of the most unstable modes in the wake. To further enhance the performance, non-sinusoidal foil motions and multi-foil configurations have also been investigated (Jones et al, 2003;Xiao et al, 2011;Ashraf et al, 2011;Xiao and Zhu, 2014;Young et al, 2014).…”

Section: Introductionmentioning

confidence: 99%