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A Study on the Flow Characteristics of Piezoelectric Micropumps with Different Numerical Models  

Jung, Jin (Department of Mechanical Engineering, Graduate School of Kyunghee University)
Kim, Dong-Hee (Department of Mechanical Engineering, Graduate School of Kyunghee University)
Kim, Chang-Nyeong (College of Advanced Technology, Kyunghee University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.16, no.8, 2004 , pp. 707-713 More about this Journal
Abstract
A numerical analysis has been conducted for flow characteristics of piezoelectric micropumps. In the present study, FSI (Fluid-Structure Interaction) model and grid deform model have been employed for each of two different geometries of the micropumps with two different frequencies in the piezoelectric diffuser/nozzle based micropumps. The displacement of piezo disk and flow rates have been closely examined at the inlet and outlet. It has been found that the motion of the piezo disk investigated with FSI model is not in accordance with that with grid deform model. The results show that the time averaged flow rate calculated with FSI model is larger than that with grid deform model. This study presents the performance analysis of piezoelectric micropumps with two different numerical models for different types of pumps.
Keywords
Micropump; Piezo disk; Diffuser/nozzle;
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