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

Abstract:

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 frequency 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.

Key words: cone structure, piezoelectric synthetic jet actuator, hotwire anemometer, frequency response, time-average velocity, maximum velocity