祝贺课题组研究论文被期刊Microsystem Technologies录用
论文题目：Simulation and experimental study of direct spray type piezoelectric air pumps based on synthetic jet
论文作者：Cheng Liu；Yuchuan Zhu
期刊名称：Microsystem Technologies
投稿时间：24-Jan-2019
录用时间：23-Mar-2019
在线出版时间：30-Mar-2019
摘要：
In this paper, two direct spray type piezoelectric air pumps based on synthetic jet are developed for large flowrate electronics cooling applications. Pumps with single chamber and double chambers are developed, respectively. Corresponding simulation and experimental researches are carried out. Simulation analysis is carried out for resonant frequencies and modes of the piezoelectric vibrator and working process of the piezoelectric pump. Theoretical calculation is given for deformation amplitude distribution of the piezoelectric vibrator. The simulation and experimental results show that the first-order resonant frequency of the piezoelectric vibrator is about 1.1 kHz and deformation amplitude at the center of the piezoelectric vibrator can reach up to 440 lm. Excited by 150 Vpp, 2.85 kHz sinusoidal voltage signal, the maximum output flowrate of the pump with single chamber is 2.1 L/min. The maximum output flowrate of the pump with double chambers is 2.43 L/min, which increases by 15.7%. The synthetic jet based piezoelectric air pumps have significant improvements in output flowrate and response frequency compared with the conventional ones. Synthetic jet based piezoelectric air pump is a promising and feasible gas source for the electronics cooling system.