Energy harvesting of two inverted piezoelectric flags in tandem, side-by-side and staggered arrangements

Mazharmanesh, Soudeh; Young, John; Tian, Fang-Bao; Lai, J.C.S.

doi:10.1016/j.ijheatfluidflow.2020.108589

Cited by 21 publications

(11 citation statements)

References 52 publications

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“…Due to having one end free, cantilevers could undergo large-amplitude oscillations under relatively small base excitation magnitudes. In fact, the capability to undergo large-amplitude oscillations is very desirable in certain applications such as in inverted-flag-based flow energy harvesters [17,18,19]. However, accurate prediction of the response of a cantilever undergoing oscillations of very large amplitudes is a difficult task due to presence of various sources of nonlinearity, such as geometric nonlinearities due to large rotations as well as inertial nonlinearities arising from centreline inextensibility.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional nonlinear extreme vibrations of cantilevers based on a geometrically exact model

Farokhi

Ertürk

2021

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 99%

Three-dimensional nonlinear extreme vibrations of cantilevers based on a geometrically exact model

Farokhi

Ertürk

2021

Journal of Sound and Vibration

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“…For numerical simulations, the nonlinear elastic model with an inextensibility constraint, which is commonly used for elastic sheets (Zhu & Peskin 2002;Connel & Yue 2007;Tian et al 2011;Mazharmanesh et al 2020), is adopted along with the direct-forcing immersed boundary method (IBM) (Uhlmann 2005). The numerical method is implemented in the OpenFOAM framework by developing a new library for the elastic sheet model and IBM.…”

Section: Governing Equationsmentioning

confidence: 99%

“…2013; Shoele & Mittal 2016; Ryu, Park & Sung 2018; Mazharmanesh et al. 2020; Tavallaeinejad et al. 2020) and an inverted flag with an upstream bluff body (Kim, Kang & Kim 2017).…”

Section: Introductionmentioning

confidence: 99%

Wall-bounded periodic snap-through and contact of a buckled sheet

Mahravan,

Lahooti,

Kim

2023

J. Fluid Mech.

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Fluid flow passing a post-buckled sheet placed between two close confining walls induces periodic snap-through oscillations and contacts that can be employed for triboelectric energy harvesting. The responses of a two-dimensional sheet to a uniform flow and wall confinement in both equilibrium and post-equilibrium states are numerically investigated by varying the distance between the two ends of the sheet, gap distance between the confining walls and flow velocity. Cases with strong interactions between the sheet and walls are of most interest for examining how contact with the walls affects the dynamics of the sheet and flow structure. At equilibrium, contact with the wall displaces the sheet to form a nadir on its front part, yielding a lower critical flow velocity for the transition to snap-through oscillations. However, reducing the gap distance between the walls below a certain threshold distinctly shifts the shape of the sheet, alters the pressure distribution and eventually leads to a notable delay in the instability. The contact between the oscillating sheet and the walls at post-equilibrium is divided into several distinct modes, changing from sliding/rolling contact to bouncing contact with increasing flow velocity. During this transition, the time-averaged contact force exerted on the sheet decreases with the flow velocity. The vortices generated at the extrema of the oscillating sheet are annihilated by direct contact with the walls and merging with the shear layers formed by the walls, resulting in a wake structure dominated by the unstable shear layers.

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“…In these works, the flag-type devices, fixed at the leading edge located upstream and free at the trailing edge located downstream, were designed. In addition, an inverted flag design (i.e., free to flap at the upstream leading edge and fixed at the downstream trailing edge), was also analyzed [65][66][67] . In Ref.…”

Section: Recent Development Of Flutter-based Energy Harvestingmentioning

confidence: 99%

Recent advancement of flow-induced piezoelectric vibration energy harvesting techniques: principles, structures, and nonlinear designs

Cao

Wang

Guo

et al. 2022

Appl. Math. Mech.-Engl. Ed.

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Energy harvesting induced from flowing fluids (e.g., air and water flows) is a well-known process, which can be regarded as a sustainable and renewable energy source. In addition to traditional high-efficiency devices (e.g., turbines and watermills), the micro-power extracting technologies based on the flow-induced vibration (FIV) effect have sparked great concerns by virtue of their prospective applications as a self-power source for the microelectronic devices in recent years. This article aims to conduct a comprehensive review for the FIV working principle and their potential applications for energy harvesting. First, various classifications of the FIV effect for energy harvesting are briefly introduced, such as vortex-induced vibration (VIV), galloping, flutter, and wake-induced vibration (WIV). Next, the development of FIV energy harvesting techniques is reviewed to discuss the research works in the past three years. The application of hybrid FIV energy harvesting techniques that can enhance the harvesting performance is also presented. Furthermore, the nonlinear designs of FIV-based energy harvesters are reported in this study, e.g., multi-stability and limit-cycle oscillation (LCO) phenomena. Moreover, advanced FIV-based energy harvesting studies for fluid engineering applications are briefly mentioned. Finally, conclusions and future outlook are summarized.

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Energy harvesting of two inverted piezoelectric flags in tandem, side-by-side and staggered arrangements

Cited by 21 publications

References 52 publications

Three-dimensional nonlinear extreme vibrations of cantilevers based on a geometrically exact model

Three-dimensional nonlinear extreme vibrations of cantilevers based on a geometrically exact model

Wall-bounded periodic snap-through and contact of a buckled sheet

Recent advancement of flow-induced piezoelectric vibration energy harvesting techniques: principles, structures, and nonlinear designs

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