音響共鳴を利用した圧電シンセティックジェットポンプの特性向上

抄録

An application of ultrasonic acoustic resonance to piezo-driven synthetic jet pumps is examined both experimentally and numerically. Tested are acoustic resonances between two parallel disks (distance between disks << their radii), one of which has an orifice at the center and the other is driven by the piezo actuator into its resonant vibration in the axial direction. It is confirmed that significant increase of pressure amplitude is realized by the acoustic resonance and the flow rate amplitude through orifice has its extremum there. The flow rate amplitude depends on the orifice diameter and the distance between disks, and they have their optimum values to give the maximum flow rate amplitude. We conclude that the acoustic resonance is useful to enhance the performance of piezo-driven synthetic jet pumps.