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Improving the performance of galloping micro-power generators by passively manipulating the trailing edge
Applied Physics Letters ( IF 4 ) Pub Date : 2018-02-19 , DOI: 10.1063/1.5016102
J. Noel 1 , R. Yadav 1 , G. Li 1 , M. F. Daqaq 2
Affiliation  

Recent trends in distributed sensing networks have generated significant interest in the design of scalable micro-power generators. One such device exploits the galloping oscillations of a prism to harness energy from a moving fluid. Performance of galloping harvester's depends on the flow patterns around the prism, which, in turn, depend on its geometry and the Reynolds number of the flow. In this letter, we demonstrate that the useful range of the galloping instability can be extended by attaching a rigid splitter plate to the rear face of the prism. The plate provides a secondary flow reattachment point, which serves to improve the oscillation amplitude and power output of the generator. Experimental results demonstrate as much as 67% power enhancement for some prism geometries and a significant reduction in the cut-in wind speed of the generator.

中文翻译:

通过被动操纵后缘提高驰骋微发电机性能

分布式传感网络的最新趋势引起了人们对可扩展微型发电机设计的极大兴趣。一种这样的装置利用棱镜的快速振荡来利用来自移动流体的能量。飞驰式收割机的性能取决于棱镜周围的流动模式,而后者又取决于其几何形状和流动的雷诺数。在这封信中,我们证明了通过将刚性分流板连接到棱镜的背面可以扩展飞驰不稳定性的有用范围。该板提供了二次流再附着点,用于提高发电机的振荡幅度和功率输出。
更新日期:2018-02-19
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