Wind tunnel experiments have been conducted to investigate the effect of turbulence on the power output of a MEMS aeroelastic wind energy harvester of approximately 5.5 mm × 5.5 mm × 10 mm in size. The energy harvester consisted mainly of a cylinder (2 mm diameter, 10 mm length) attached to a MEMS platform equipped with piezoelectric. The turbulence is artificially created via a turbulence generator comprising of a series of rectangular beams placed in the wind tunnel upstream of the energy harvester. By varying the wind speed and width of the turbulence generator beams, it is shown that the time-averaged power output of the energy harvester increases significantly as wind speed and turbulence generator size increases. In particular, replacing a 5 mm-width turbulence generator with a 20 mm-width turbulence generator can increase the power output by 1710% at wind speed of 6 m/s. Power output in the magnitude of tens of nanowatts is measured when the device is exposed to turbulent...

中文翻译：

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压电MEMS器件湍流捕获气动弹性风能。

已经进行了风洞实验，以研究湍流对大约5.5 mm × 5.5 mm × MEMS空气弹性风能采集器的功率输出的影响。尺寸为10毫米。能量采集器主要由圆柱体（直径2毫米，长度10毫米）组成，该圆柱体连接到配备有压电元件的MEMS平台。湍流是通过湍流发生器人工创建的，该湍流发生器包括放置在能量收集器上游的风洞中的一系列矩形光束。通过改变湍流发生器束的风速和宽度，表明随着风速和湍流发生器尺寸的增加，能量收集器的时间平均功率输出显着增加。特别是用20 mm宽度的湍流发生器代替5 mm宽度的湍流发生器可以在风速为6 m / s时将功率输出提高1710％。当设备暴露在湍流中时，测量的功率输出为数十纳瓦。