Coupling Motion and Energy Harvesting of Two Side-by-Side Flexible Plates in a 3D Uniform Flow

Dibo, Dong; Chen, Weishan; Shi, Shengjun

doi:10.3390/app6050141

Cited by 14 publications

(4 citation statements)

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“…Several recent works have studied the effect of various dimensionless control parameters such as Reynolds number, density ratio, shear modulus and aspect ratio on the flutter of one or more thin plates or flags with bending rigidity in 3-D viscous, high-Reynolds-number flows (Huang & Sung 2010;Tian, Lu & Luo 2012;Yu, Wang & Shao 2012;Banerjee, Connell & Yue 2015;Dong, Chen & Shi 2016;Chen et al 2020). Immersed-boundary methods were used by Tian et al (2012) and Huang & Sung (2010).…”

Section: Introductionmentioning

confidence: 99%

Membrane flutter in three-dimensional inviscid flow

Mavroyiakoumou

Alben

2022

J. Fluid Mech.

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We develop a model and numerical method to study the large-amplitude flutter of rectangular membranes (of zero bending rigidity) that shed a trailing vortex-sheet wake in a three-dimensional (3-D) inviscid fluid flow. We apply small initial perturbations and track their decay or growth to large-amplitude steady-state motions. For 12 combinations of boundary conditions at the membrane edges we compute the stability thresholds and the subsequent large-amplitude dynamics across the three-parameter space of membrane mass density, pretension and stretching rigidity. With free side edges we find good agreement with previous 2-D results that used different discretization methods. We find that the 3-D dynamics in the 12 cases naturally forms four groups based on the conditions at the leading and trailing edges. The deflection amplitudes and oscillation frequencies have scalings similar to those in the 2-D case. The conditions at the side edges, although generally less important, may have small or large qualitative effects on the membrane dynamics – e.g. steady vs unsteady, periodic vs chaotic or the variety of spanwise curvature distributions – depending on the group and the physical parameter values.

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Section: Introductionmentioning

confidence: 99%

Membrane flutter in three-dimensional inviscid flow

Mavroyiakoumou

Alben

2022

J. Fluid Mech.

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“…They can also harvest energy from sources where vibrations are present in several frequencies, see Frizzell et al [24] and Cottone et al [25], and [26]. Dong et al [27] developed a new energy harvesting device based on two side-by-side flexible plates. The adopted algorithm was verified and validated by the simulation of flow past a square flexible plate.…”

Section: Introductionmentioning

confidence: 99%

Power Control Optimization of an Underwater Piezoelectric Energy Harvester

et al. 2018

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Abstract:Over the past few years, it has been established that vibration energy harvesters with intentionally designed components can be used for frequency bandwidth enhancement under excitation for sufficiently high vibration amplitudes. Pipelines are often necessary means of transporting important resources such as water, gas, and oil. A self-powered wireless sensor network could be a sustainable alternative for in-pipe monitoring applications. A new control algorithm has been developed and implemented into an underwater energy harvester. Firstly, a computational study of a piezoelectric energy harvester for underwater applications has been studied for using the kinetic energy of water flow at four different Reynolds numbers Re = 3000, 6000, 9000, and 12,000. The device consists of a piezoelectric beam assembled to an oscillating cylinder inside the water of pipes from 2 to 5 inches in diameter. Therefore, unsteady simulations have been performed to study the dynamic forces under different water speeds. Secondly, a new control law strategy based on the computational results has been developed to extract as much energy as possible from the energy harvester. The results show that the harvester can efficiently extract the power from the kinetic energy of the fluid. The maximum power output is 996.25 µW and corresponds to the case with Re = 12,000.

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“…Early interest in FSI arose from technological applications where it is important to avoid unwanted-sometimes catastrophic-consequences of flow-induced vibration of, e.g., heatexchanger tubes, offshore risers, overhead cables, poles, chimneys, and even buildings [5,6]. More recently, attention has turned to applications where FSI can be exploited to improve the design of various devices and processes, e.g., find novel forms of marine propulsion and maneuvering [7,8], design artificial heart valves [9,10], construct effective vortex generators for heat transfer and mixing enhancement or passive perturbations for flow control [11][12][13][14][15], optimize the efficiency of energy harvesting through oscillations or piezoelectric elements [16][17][18][19][20][21][22][23], etc.…”

Section: Introductionmentioning

confidence: 99%

Cross-Flow-Induced Vibration of an Elastic Plate

Konstantinidis

2021

Fluids

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The cross-flow over a surface-mounted elastic plate and its vibratory response are studied as a fundamental two-dimensional configuration to gain physical insight into the interaction of viscous flow with flexible structures. The governing equations are numerically solved on a deforming mesh using an arbitrary Lagrangian-Eulerian finite-element method. The turbulent flow is resolved using the unsteady Reynolds-averaged Navier–Stokes equations at a Reynolds number of 2.5×104 based on the plate height. The material properties of the plate are selected so that the structural frequency is close to the frequency of vortex shedding from the free edge of a rigid plate, which is studied initially as the reference case. The results show that the plate tip oscillates back and forth in response to unsteady fluid loading at twice the frequency of vortex shedding, which is attributable to the sequential formation of a primary vortex from the free edge and a secondary vortex near the base of the plate. The effects of the plate elasticity and density on the structural response are considered, and results are compiled in terms of the reduced velocity U* and the density ratio ρ*. The standard deviation of tip displacement increases with reduced velocity in the range 7.1⩽U*⩽18.4, irrespective of whether the elasticity or the density of the plate is varied. However, the average deflection of the plate in the streamwise direction displays different scaling with U* and ρ*, but scales almost linearly with the Cauchy number ∼U*2/ρ*. Interestingly, the synchronization between plate motion and vortex shedding ceases at U*=18.4, and the excitation mechanism in the latter case resembles flutter instability, rather than vortex-induced vibration found at lower U*.

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Coupling Motion and Energy Harvesting of Two Side-by-Side Flexible Plates in a 3D Uniform Flow

Cited by 14 publications

References 50 publications

Membrane flutter in three-dimensional inviscid flow

Membrane flutter in three-dimensional inviscid flow

Power Control Optimization of an Underwater Piezoelectric Energy Harvester

Cross-Flow-Induced Vibration of an Elastic Plate

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