Extracting energy from Vortex-Induced Vibrations: A parametric study

Barrero-Gil, A.; Pindado, Santiago; Avila, Sergio González

doi:10.1016/j.apm.2011.09.085

Cited by 162 publications

(76 citation statements)

References 14 publications

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“…The influence of some key parameters like the mass ratio, the mechanical damping, the Reynolds number [2], and the cylinder's aspect ratio (length to diameter ratio) in the electrical power was experimentally investigated in a re-circulating water channel. VIV potential for energy extraction has also been studied by Grouthier et al [3], Mackowski and Williamson [4], Barrero-Gil et al [5], or Sanchez-Sanz et al [6], In the last two years, several research has been carried out considering a piezoelectric material as a transduction means to produce small quantities of electrical power (of the order of milli-watts) from VIV of a circular cylinder under the action of an airstream. For example, Abdelkefi et al [7] presented a theoretical analysis using a wake-oscillator model to describe fluid forces on the oscillating circular cylinder which is appropriately coupled with the cylinder and piezoelectric dynamics.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical energy extraction from transverse galloping using a dual mass system

Vicente-Ludlam

Barrero-Gil

Velázquez

2015

Journal of Sound and Vibration

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This paper offers a theoretical study of energy extraction through transverse galloping using a dual-mass system. To this end, a two-degree-of-freedom model is developed where fluid forces on the galloping body are described resorting to quasi-steady hypothesis; the model is solved approximately by using the Harmonic Balance Method. Three possible configurations of the dual-mass system have been analyzed. Two of them show an improvement in the efficiency of energy extraction with respect to that of the single mass configuration when the mechanical properties of the dual-mass system are appropriately chosen. In addition, the dual-mass system promotes a broadening of the values of the incident flow velocities at which the efficiency is kept high.

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Section: Introductionmentioning

confidence: 99%

Enhanced mechanical energy extraction from transverse galloping using a dual mass system

Vicente-Ludlam

Barrero-Gil

Velázquez

2015

Journal of Sound and Vibration

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“…It was reported that when the shedding frequency is near the lowest flexural resonant frequency of the cylinder, the harvested power can be in the order of 1 mW for a cylinder of 40 cm in length and 1 cm in diameter in air with a flow speed of 5 m/s. Barrero-Gil, Pindado, and Avila (2012) analyzed theoretically the concept of energy harvesting from elastically-mounted rigid circular cylinder. A lumped-parameter mechanical model was considered without including any transduction mechanism.…”

Section: Viv-/cylinder-based Aeroelastic Energy Harvestersmentioning

confidence: 99%

Aeroelastic energy harvesting: A review

Abdelkefi

2016

International Journal of Engineering Science

440

166

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“…This approach has been adopted by industry to suppress the oscillation of mechanical structures by means of a tuned mass damper (e.g., Kamiya et al, 1996). It has also been seen as a promising way to enhance renewable energy from fluid flows through VIV (Barrero-Gil et al, 2012;Nishi 2013).…”

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confidence: 99%

Vortex-induced vibration of two elastically connected bodies: experimental verification of lock-in to multiple eigenmodes

Nishi

Saitoh

2017

JFST

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Vortex-induced vibration of two elastically connected bodies: experimental verification of lock-in to multiple eigenmodes IntroductionA circular cylinder placed in a fluid flow typically exhibits oscillatory motion. It is well known that such motion, referred to as vortex-induced vibration (VIV), is induced by vortices generated on and shed behind the oscillating cylinder. The magnitude of VIV depends on the flow speed V , the natural frequency fn of the mechanical system including the cylinder, and the diameter d of the cylinder. This dependency is represented by a single dimensionless parameter known as the reduced velocity Vr = V/(fn d). Reduced velocities of Vr = 5-8 generally produce distinct VIV of the cylinder, the amplitude of which typically reaches the equivalent of the cylinder diameter (Bishop and Hassan 1964; Koopman, 1967;Blevins and Burton, 1976;Bearman, 1984;Khalak and Williamson, 1996; Sakamoto et al., 2004;Sarpkaya, 2004;Williamson and Govardhan, 2004).Previous studies of systems with one degree of freedom (1DOF), such as a single movable circular cylinder (e.g., Khalak and Williamson, 1999), have reported little evidence of VIV for Vr > 10. However, when the movable cylinder is placed together with a fixed one to form a tandem arrangement, remarkable VIV is encountered for Vr > 10 as it is induced by an instability of the motion and the wake (e.g., Igarashi, 1981;Zdravkovich, 1985;Sumner, 2010).In the present study, we address a system with two degrees of freedom (2DOF) that is driven by flow-induced forces. In many previous studies (e.g., Jauvtis and Williamson, 2004;Assi, 2014;Bai and Qin, 2014;Gsell et al., 2016), the 2DOF system in questions was a body that oscillated in both the streamwise and spanwise directions. However, the 2DOF system considered herein refers to a mechanical system that comprises two vibrating bodies that are connected elastically. These two types of 2DOF system differ physically in the numbers of eigenfrequencies involved in the 1 Yoshiki NISHI* and Komei SAITOH* AbstractThis study examines experimentally the vortex-induced vibration (VIV) of a mechanical system with two eigenmodes. A previous experiment setup was refined to enable the experiment, and was placed in a circulating water channel to submerge a movable circular cylinder (cylinder A). This cylinder was subjected to fluid flow while being supported elastically, whereupon VIV occurred. A second movable cylinder (cylinder B) above the water was connected to cylinder A and supported elastically. The displacements of those two cylinders were measured. The underlying hypothesis was that the vortex shedding frequency would become locked to one or other of the two eigenfrequencies, and that which eigenmode the vortex shedding frequency became locked to would depend on the reduced velocity. To test this hypothesis, the experimental setup was refined to withstand the high flow speeds required to allow the vortex shedding frequency to become locked to either eigenfrequency. From the results obtained, the amplitude ...

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Extracting energy from Vortex-Induced Vibrations: A parametric study

Cited by 162 publications

References 14 publications

Enhanced mechanical energy extraction from transverse galloping using a dual mass system

Enhanced mechanical energy extraction from transverse galloping using a dual mass system

Aeroelastic energy harvesting: A review

Vortex-induced vibration of two elastically connected bodies: experimental verification of lock-in to multiple eigenmodes

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