Simulation of raindrop-shaped flow tube valveless piezoelectric pump

Abstract

In order to promote the application of raindrop-shaped flow tube valveless piezoelectric pump (RSFTV PZT pump), basing on the existing research, the RSFTV PZT pump was simulated by computer. Firstly, the existence of the flow resistance of the flow tube was proved by simulation of FLUENT. Then, the dynamic mesh analysis of the pump was carried out to simulate the pumping flow rate at different driving frequencies. Lastly, the simulated results were compared with the experimental results, which shows that the flow rate tendency and value obtained by simulation are basically consistent with that by experiment. The simulation of the RSFTV PZT pump would be helpful to further accelerate related researches and promote the application of RSFTV PZT pump in MEMS and other fields.

Design and investigation on a piezoelectric screw pump with high flowrate

“…He et al [30] proposed a valveless piezoelectric pump on basis of Coanda effect. Tang et al [31] proposed a valveless piezoelectric pump with raindrop structure. Huang et al [32] proposed a valveless piezoelectric pump with vortex diode as internal valve.…”

Design and investigation on a novel piezoelectric screw pump

“…Since the first prototype of the valveless micro pump with diffuser/nozzle elements was presented by Stemme E and Stemme G [26], various kinds of micro channel structures have been proposed to improve the performance, such as multi-stage Y-branch tube [27], three-way diffuser [28], cross junction [23], etc. The valveless piezoelectric pump is simple in structure, and easy to miniaturize [4,29]. Besides, it is no risk of valve wear and has the characteristics of good highfrequency.…”