纸盆结构在压电式合成射流驱动器上的应用  

Applications of Cone Structure on Piezoelectric Synthetic Jet Actuator

作　　者：张立[1] 王帮峰[1] 周勇[2] 

机构地区：[1]南京航空航天大学,南京210016 [2]南京信息工程大学,南京210044

出　　处：《中国机械工程》2013年第2期149-152,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(90405008)

摘　　要：将扬声器纸盆结构引入到压电式合成射流驱动器中,并制作了试件。使用热线风速仪测量了驱动器出口附近的时均速度、最大速度及沿中心线的射流分布。将实验结果与传统压电式合成射流驱动器的性能相比较,比较结果显示,驱动器在频响各区域射流特征不同,频率越高,正向射流越强烈;无论是从时均速度频响曲线还是从最大速度频响曲线上看,采用了纸盆结构的驱动器的驱动性能都有明显的提升;同时射流下游影响范围也有明显增大。总体来看,将纸盆结构引入到驱动器的设计中取得了较好的效果。Cone structure was introduced into the design of piezoelectric synthetic jet actuator. The specimen was made. And the velocities of outflows were detected by hotwire anemometer. The fre- quency response of time--average velocities and the frequency response of maximum velocity during one period were obtained. The results were compared to normal actuators＇ performances. It shows that：the jet velocity increases with the frequency of the actuator; the performance of the actuator with the cone structure is evidently enhanced;the region that the actuator effected on is obviously enlarged. Over all, the application of the cone structure is successful to the actuator.

关 键 词：纸盆结构 压电式合成射流驱动器 热线风速仪 频率响应 时均速度 最大速度 

分 类 号：O34[理学—固体力学]