用于风能收集的 VIV 阵列

IF 2.4 3区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Intelligent Material Systems and Structures Pub Date : 2024-02-23 DOI:10.1177/1045389x241230569
Shilei Chen, Yuanyi Wang, Rujun Song, Yongsheng Gao, Zuankai Wang, Zhengbao Yang
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引用次数: 0

摘要

近几十年来,利用涡流诱导振动(VIV)压电传感器从流动中收集能量因其结构简单、无叶片布局和维护成本低等优点而备受关注。然而,现有的大多数研究都侧重于设计和分析单个压电能量收集器(PEH),而没有研究流体与结构之间的相互作用以及多个压电能量收集器阵列之间的耦合。在此,我们使用 2 × 2 PEH 阵列进行了一项实验研究,以调查其在不同风速和间距下的动态响应。结果表明,随着垂直间距的减小,PEH 阵列的输出电压也随之增大,当满足最小垂直间距、最大水平间距和共振风速条件时,每个 PEH 的最大平均输出电压为 20.6 V。与单个 PEH 相比,2 × 2 阵列布置可将平均输出电压提高 168%。此外,在电阻为 1 MΩ 的情况下,每个 PEH 的平均输出功率增加了 629%,达到 4.3×10-4 W,最大输出功率增加了 792%,达到 5.3×10-4。实验表明,涡流脱落耦合可在定义明确的阵列中诱发更高的振动,这为开发无叶风电场铺平了新的道路。
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VIV array for wind energy harvesting
Harvesting energy from flow using vortex-induced vibration (VIV) piezoelectric transducers has gained significant attention in recent decades due to their advantages, such as simple structure, blade-less layout, and low maintenance costs. However, most existing studies have focused on designing and analyzing a single piezoelectric energy harvester (PEH), without investigating the fluid-structure interaction and coupling of multiple PEH arrays. Here, we conducted an experimental study using a 2 × 2 PEH array to investigate its dynamic response under different wind speeds and spacings. Results show that the output voltage of the PEH array increases as the vertical spacing decreases, and the maximum average output voltage of 20.6 V per PEH is obtained when the minimum vertical spacing, maximum horizontal spacing, and resonance wind speed conditions are met. Compared to a single PEH, the 2 × 2 array arrangement increases the average output voltage by up to 168%. Additionally, the average output power under the resistance of 1 MΩ increases by 629% to 4.3×10−4 W per PEH, and the maximum output power increases by 792% to 5.3×10−4. Experiments indicate that the vortex shedding coupling can induce higher vibration in a well-defined array, which paves a new way for developing bladeless wind farms.
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来源期刊
Journal of Intelligent Material Systems and Structures
Journal of Intelligent Material Systems and Structures 工程技术-材料科学:综合
CiteScore
5.40
自引率
11.10%
发文量
126
审稿时长
4.7 months
期刊介绍: The Journal of Intelligent Materials Systems and Structures is an international peer-reviewed journal that publishes the highest quality original research reporting the results of experimental or theoretical work on any aspect of intelligent materials systems and/or structures research also called smart structure, smart materials, active materials, adaptive structures and adaptive materials.
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