Harvesting energy from wind to supply low-power consumption devices has attracted numerous research interests in recent years. However, a traditional vortex-induced vibration energy harvester can only operate within a limited range of wind speed. Thus, how to broaden the effective wind speed rangefor energy harvesting is a challenging issue. In this paper, a slotted cylinder bluff body is proposed for being used in the design of a wind energy harvester. The physical prototype is manufactured and the wind tunnel test is performed for evaluating the actual performance of the prototyped energy harvester. The effect of the orientation of the slot on the performance of the proposed energy harvester is experimentally investigated. As compared to the traditional counterpart without the slot at the lateral side of the bluff body, the proposed energy harvester demonstrates the superiority for realizing broadband energy harvesting. Due to the introduction of the slot, and by carefully tuning the orientation of the slot, both the vortex-induced vibration and the galloping phenomena can be stimulated within two neighboring wind speed ranges, leading to the formation of an extremely broad bandwidth for energy harvesting.

中文翻译：

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使用开槽圆柱钝体的混合风能采集器

近年来，从风能中收集能量以提供低功耗设备吸引了众多研究兴趣。然而，传统的涡激振动能量采集器只能在有限的风速范围内运行。因此，如何扩大有效风速范围以进行能量收集是一个具有挑战性的问题。在本文中，提出了一种开槽的圆柱钝体，用于风能采集器的设计。制造了物理原型，并进行了风洞测试，以评估原型能量采集器的实际性能。通过实验研究了槽的方向对所提出的能量收集器的性能的影响。与在钝体侧面没有槽的传统同类产品相比，提议的能量收集器展示了实现宽带能量收集的优势。由于引入了缝隙，并通过仔细调整缝隙的方向，可以在两个相邻的风速范围内激发涡流引起的振动和舞动现象，从而形成了非常宽的能量收集带宽。