An in-plane omnidirectional piezoelectric wind energy harvester based on vortex-induced vibration

Li, Shen; He, Xuefeng; Li, Jiajie; Feng, Zhiqiang; Yang, Xiaokang; Li, Jinghua

doi:10.1063/5.0070167

Cited by 11 publications

(8 citation statements)

References 36 publications

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“…The experimental result demonstrated the capability of collecting wind energy in two orthogonal directions with the U-shaped supporter. Li et al [20] successively developed a VIV piezoelectric wind energy harvester with a cylinder shell, which could adapt to omnidirectional incident wind due to its geometric characteristic. Gong et al [21] proposed a direction-adaptive VIV-based energy harvester with a guide wing to capture flow energy.…”

Section: Introductionmentioning

confidence: 99%

A multi-directional and multi-modal galloping piezoelectric energy harvester with tri-section beam

Xia,

Yang,

Tang

et al. 2024

Smart Mater. Struct.

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A traditional wind energy harvester based on galloping can only scavenge wind energy from one specific direction, which fails to work efficiently in a natural erratic environment. In this study, we propose a galloping-based piezoelectric energy harvester that can collect energy from wind flow in a wide range of incident directions with multiple vibrational modes being excited. The proposed harvester is composed of a tri-section beam with bonded piezoelectric transducers and a square bluff body with splitters. Finite element analysis of the tri-section beam structure is first performed and confirms the clustered natural frequencies that ease the excitation of different modes. Then, the aerodynamic characteristics of various bluff bodies is conducted through CFD to compare the capability of galloping. Finally, the wind tunnel experiment is carried out to test the wind energy harvesting performance by utilizing the harvester's multi-modal characteristics. The results demonstrate that the proposed harvester can scavenge wind energy in multiple directions with the capability of galloping in multiple vibrational modes, and superior performance is achieved when the second bending mode is triggered. The novel design of the harvester from this work provides a viable solution for harvesting wind energy in a natural environment with varying wind conditions.

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Section: Introductionmentioning

confidence: 99%

A multi-directional and multi-modal galloping piezoelectric energy harvester with tri-section beam

Xia,

Yang,

Tang

et al. 2024

Smart Mater. Struct.

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“…Shi et al [47] showed in their experiments that the output performance of the cross-double-beam configuration outperformed the single-beam configuration visibly. Afterwards, Li et al [48] reported a unique energy harvester made up of three semicircular piezoelectric beams and a hollow cylinder. Both experimental and theoretical findings demonstrated that the designed harvester was capable of harnessing wind energy from any incoming flow direction in the horizontal plane.…”

Section: Introductionmentioning

confidence: 99%

Omnidirectional wind piezoelectric energy harvesting

Zhang¹,

He²,

Meng³

et al. 2023

J. Phys. D: Appl. Phys.

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A novel energy harvester based on vortex-induced vibration (VIV) of the sphere and piezoelectric effect is proposed to efficiently gather wind energy from all horizontal directions. An elastically-supported foam sphere is vertically arranged and considerably oscillates in the cross-flow direction when the wind speed is in the lock-in region. A piezoelectric beam is attached to the supported sphere by a spring and deforms periodically around the original buckling state, thereby converting kinetic energy into electrical energy. Experimental studies are performed to assess the power output of the harvester when exposed to wind flows with varying directions and speeds. The omnidirectional wind flow is divided to 12 orientations with the interval angle of 30°, and the wind speeds range from 1.17 m/s to 7.87 m/s. The testing findings indicate that the harvester has excellent consistency in both lock-in region and average power for various wind azimuths. When the wind direction is changed from 0° to 360°, the peak average power changes from 179.8 μW to 247.5 μW, and the wind speed region where the sphere undergoes vibration changes from 2.58 m/s"~" 7.05 m/s to 2.58 m/s"~" 7.87 m/s. Following that, the effects of the length of the supporting spring and the diameter of the sphere on the output average power and lock-in region are investigated experimentally. Finally, a demonstration of powering a wireless sensing node is performed to show applications of the designed energy harvester in windy conditions.

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“…However, the VIV-based energy harvester (VIVEH) generally works well as the shedding frequency coincides with the natural frequency of structure. To extend the synchronization range and improve the VIV energy harvesting performance, plenty of studies including the optimization of bluff body [12][13][14][15][16][17][18][19][20], the introduction of non-linearity [21][22][23][24][25][26][27] and the interference effects of bluff bodies [28,29] have been conducted. Dai et al [12] investigated the orientation of bluff body so as to get the best performance of VIV energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

“…Dai et al [12] investigated the orientation of bluff body so as to get the best performance of VIV energy harvesting. Li et al [13] proposed an in-plane omnidirectional piezoelectric VIV-based wind energy harvester with a cylindrical shell and curved beams to expand the working wind direction range. Jin et al [14] investigated the use of bionicshaped attachments for improving the harvested energy.…”

Section: Introductionmentioning

confidence: 99%

Dynamics and performance evaluation of a vortex-induced vibration energy harvester with hybrid bluff body

Ren

Shang

et al. 2023

Smart Mater. Struct.

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To investigate the influence of bluff body with a variable section on the vortex-induced vibration energy harvesting performance, a series of hybrid cylinders are designed and a quantitative comparison is presented. The basic elements of hybrid bluff body are the D-shaped (D) and original circular-shaped cylinders (O), and the length ratio between the O-shaped part and the D-shaped part is fixed. According to the arrangement order, three kinds of hybrid bluff bodies are termed as ODO, ODODO and DOD. A distributed model is developed and the numerical simulation is carried out to verify the response. Corresponding wind tunnel experiments are conducted, and the results reveal that compared to the bluff body with a circular cylinder, the hybrid bluff bodies such as ODODO and DOD can enhance the vortex-induced vibration and thus increase the output significantly. Moreover, the lock-in regions with the ODODO and DOD shapes will increase by 12.5% and 62.5%, respectively. However, the results also indicate that some type of arrangement such as ODO will suppress the energy harvesting performance. Furthermore, the computational fluid dynamics (CFD) method is employed to reveal the physical mechanism of flow field around the hybrid bluff body. The results show that the integration of D-shape prism in a cylinder along an axial direction could influence aerodynamics. A faster boundary layer separation occurs for the VIV energy harvesters with the hybrid cylinders of ODODO and DOD, which could improve the energy conversion efficiency from flow-induced vibrations. However, the aerodynamic force is restricted and response is suppressed as a D-shaped cylinder is sandwiched between two O-shaped cylinders.

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An in-plane omnidirectional piezoelectric wind energy harvester based on vortex-induced vibration

Cited by 11 publications

References 36 publications

A multi-directional and multi-modal galloping piezoelectric energy harvester with tri-section beam

A multi-directional and multi-modal galloping piezoelectric energy harvester with tri-section beam

Omnidirectional wind piezoelectric energy harvesting

Dynamics and performance evaluation of a vortex-induced vibration energy harvester with hybrid bluff body

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