排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2013, Vol. 31 Issue (1): 20-24    DOI: 10.3969/j.issn.1674-8530.2013.01.005
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Performance of parallel doublechamber valveless piezoelectric micropump with threeway diffuser/nozzle tube
 DENG  Zhi-Dan, LI  Fu, HE  Xiu-Hua, WANG  Jian
(1.Faculty of Science, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2.School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China)
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Abstract The fluidstructure interaction (FSI) method was adopted to simulate the fluid flow in a valveless piezoelectric pump with threeway diffuser/nozzle tube, and then a comparison is made with the experiment results. As the 100 V excitation voltage is applied, the flow rate increases against increasing frequency (50~175 Hz); the maximum error of flow rate between FSI computation and experiment is 12%. At the frequency of 100 Hz the flow rate increases with voltage linearly. The experimental data confirmed such computed results, suggesting the FSI simulation method is feasible for this micropump. Moreover a parallel doublechamber valveless piezoelectric micropump with threeway diffuser/nozzle tube was designed to improve output flow rate and pressure of the traditional single chamber valveless piezoelectric pump. Effects of difference in phase of the two vibrators on flow rate in the doublechamber micropump were analyzed by the FSI method, and the transient flow rate plots in one circle were established under various differences of phase, eventually compared with those of the singlechamber pump. The results indicated the flow rate shows a little change with difference of phase in the parallel doublechamber micropump. However, a continuous fluid transport was realized in the doublechamber pump in one cycle, for example,as the difference of phase is 180°,the flow rate is 0367 mL/min, and as the difference of phase is 360°, the flow rate is 0.349 mL/min.
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DENG Zhi-Dan
LI Fu
HE Xiu-Hua
WANG Jian
Key wordsvalveless piezoelectric pump   threeway diffuser/nozzle tube   fluid structure interaction   experiment comparison   parallel structure     
Received: 2012-06-14; Published: 2013-01-31
Cite this article:   
DENG Zhi-Dan,LI Fu,HE Xiu-Hua et al. Performance of parallel doublechamber valveless piezoelectric micropump with threeway diffuser/nozzle tube[J]. Journal of Drainage and Irrigation Machinery Engin, 2013, 31(1): 20-24.
 
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