压电一活塞式合成射流驱动器结构与性能

摘要

This paper presents a novel structure for Piezoelectric Synthetic Jet Actuator ( PSJA ). It unites the traditional PSJA and the motor driven SJA. The simulation of the model has been established by software ANSYS, and compared to traditional PSJA. The experiments with hotwire anemometer have been established. The frequency response, instant velocity around orifice, velocity distribution along axial distance, and the distribution of velocity of the outflow near the orifice has been obtained. The results revealed that the new structure could nominally enhance the output of the actuator. The peak velocity of the outflow could over 80m/s.%在传统的压电合成射流驱动器驱动器的基础之上,结合活塞式合成射流驱动器的结构特点,设计了一种新型的压电式合成射流驱动器结构.使用ANSYS仿真出这种新结构的振型模态并与传统压电式合成射流驱动器的振动模态对比.通过热线风速仪对新驱动器的驱动能力进行测量.得到了这种新型驱动器的频率响应曲线、瞬时速度、中心线上速度分布和开口处横向速度分布曲线.实验结果显示出这种新型的压电-活塞式合成射流驱动器峰值速度可以达到80m/s以上,可以有效增加驱动器的驱动能力.