Journal
CHINESE JOURNAL OF MECHANICAL ENGINEERING
Volume 29, Issue 4, Pages 825-831Publisher
EDITORIAL OFFICE CHINESE JOURNAL MECHANICAL ENGINEERING
DOI: 10.3901/CJME.2016.0427.061
Keywords
piezoelectric pump; valveless; fractal-like Y-shape branching tube; FEM
Categories
Funding
- National Natural Science Foundation of China [51375227]
- Jiangsu Provincial Natural Science Foundation of China [BK20150518]
- Postdoctoral Science Foundation of Jiangsu Province [1501108B]
- Senior Talent Start-up Foundation of Jiangsu University [14JDG145]
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Due to the special transportation and heat transfer characteristics, the fractal-like Y-shape branching tube is used in valveless piezoelectric pumps as a no-moving-part valve. However, there have been little analyses on the flow resistance of the valveless piezoelectric pump, which is critical to the performance of the valveless piezoelectric pump with fractal-like Y-shape branching tubes. Flow field of the piezoelectric pump is analyzed by the finite element method, and the pattern of the velocity streamlines is revealed, which can well explain the difference of total flow resistances of the piezoelectric pump. Besides, simplified numerical method is employed to calculate the export flow rate of piezoelectric pump, and the flow field of the piezoelectric pump is presented. The FEM computation shows that the maximum flow rate is 16.4 mL/min. Compared with experimental result, the difference between them is just 55.5%, which verifies the FEM method. The reasons of the difference between dividing and merging flow resistance of the valveless piezoelectric pump with fractal-like Y-shape branching tubes are also investigated in this method. The proposed research provides the instruction to design of novel piezoelectric pump and a rapid method to analyse the pump flow rate.
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