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• W3209321818 endingPage "108546" @default.
• W3209321818 startingPage "108546" @default.
• W3209321818 abstract "• When the flow rate is high, the change of the L and H has a great influence on the of the PEH array. • The single-row parallel-arranged array (PEH-2P and PEH-3P) can improve the system's initial vibration velocity and half-frequency bandwidth. • The single-row series-arranged array (PEH-2S and PEH-3S) can increase the maximum energy harvesting power. • The energy harvesting capacity of nine-vibrators square array is 102.4% higher than the reference value, and the initial vibration velocity is 25.95% lower than the reference value. This paper mainly uses simulation and experimental methods to analyze the output characteristics of different piezoelectric energy harvester (PEH) arrays based on flow-induced vibration, which is mainly used in low-velocity water in a natural environment. Each PEH consists of a piezoelectric beam and an interference cylinder. The PEH arrays presented in this paper include the double-vibrators parallel array (PEH-2P), double-vibrators serial array (PEH-2S), three-vibrators parallel array (PEH-3P), three-vibrators serial array (PEH-3S), and nine-vibrators square array (PEH-9). Prototypes of the different PEH arrays are fabricated and experiments are conducted to explore the energy harvesting capacity, the maximum energy harvesting power, initial vibration velocity and half-power bandwidth of the different PEH arrays. The experimental results demonstrated that the PEH-2P and the PEH-3P can improve the system's initial vibration velocity and half-power bandwidth, but the maximum energy harvesting power of the PEH array is relatively not good. The PEH-2S and the PEH-3S can increase the maximum energy harvesting power of the PEH array, but the initial vibration velocity and half-power bandwidth of the PEH array are relatively not good. The average value of energy harvesting capacity of the PEH-9 is the largest, which is 102.4% higher than the reference value, and the initial vibration velocity of the PEH-9 is the lowest, which is 25.95% lower than the reference value. This work provides a comprehensive experimental guideline for further designing an efficient PEH array used in the low-speed water environment." @default.
• W3209321818 created "2021-11-08" @default.
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• W3209321818 date "2022-03-01" @default.
• W3209321818 modified "2023-10-16" @default.
• W3209321818 title "Study on different underwater energy harvester arrays based on flow-induced vibration" @default.
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• W3209321818 doi "https://doi.org/10.1016/j.ymssp.2021.108546" @default.
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