A complete dynamic model for the simulation of the valve-less piezoelectric pump performance is presented. In this model the piezoelectric action is considered as a periodic force acting on a pumping membrane. The natural frequency of the pump is calculated as well as its performance as a function of the driving frequency. The effect of the deviation of the driving frequency from the natural frequency on the pump performances is clearly shown. Also, it is demonstrated that the effect of the liquid mass in the pump nozzles on the natural frequency of the system is very high owing to the high acceleration of the fluid in the nozzles. Comparison with experiments shows a very good agreement with a minimal number of adjusting parameters.
A Piezoelectric Valve-Less Pump-Dynamic Model
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division December 30, 1999; revised manuscript received November 1, 2000. Associate Editor: J. Katz.
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Ullmann, A., Fono, I., and Taitel, Y. (November 1, 2000). "A Piezoelectric Valve-Less Pump-Dynamic Model ." ASME. J. Fluids Eng. March 2001; 123(1): 92–98. doi: https://doi.org/10.1115/1.1343459
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