中文摘要：

建立了振动式压电风能发电装置在风流场中的有限元分析模型。基于标准k-ε模型进行了风流场仿真分析,并通过系统耦合实现了风流场和发电装置固体之间的双向耦合分析。获得了压电发电装置在风流体作用下的振动特性结果,结果显示：发电装置在流场中径向放置比其他放置方式能产生更多的电能。制作了压电发电装置,并在微型风洞中进行了实验。结果表明,发电装置在风场中径向放置时产生的电压明显比其他放置方式高,当风速为15 m/s时,径向放置的输出电压峰峰值大约是轴向放置的两倍。

英文摘要：

The finite element model for the piezoelectric wind energy harvester is developed. The wind flow field was simulated using the standard k-ε turbulence model. The fluid-structure interaction between the flow and the energy harvester was analyzed using system coupling. The vibration characteristics of the energy harvester were obtained, which was acted upon by the force exerted by the wind flow. The results show that the energy harvester placed along the radial direction can generate more electric power than that placed along the other direction. An energy harvester was fabricated and wind-tunnel experiments were carried out. The experimental results show that the energy harvester placed along the radial direction can generate higher voltage than that placed along the other direction. When the wind velocity is 15m/s, the out- put voltage peak-peak value of the harvester placed along the radial direction is about two times of that placed along the axial direction.