%A GE Zhentao, JI Jing, LAN Yubin, HU Xiaoqi, QIN Tingting, HU CaiqiŠĪ %T Analysis and test on influence of caudal-fin on performance of valve-less piezoelectric pump %0 Journal Article %D 2017 %J Journal of Drainage and Irrigation Machinery Engin %R 10.3969/j.issn.1674-8530.16.0168 %P 87-92 %V 35 %N 1 %U {http://zzs.ujs.edu.cn/pgjx/CN/abstract/article_2180.shtml} %8 2017-01-25 %X In order to study the performance of a valve-less piezoelectric pump with caudal fin and identify the influence of piezoelectric vibrator-caudal fin on the pumping flow, a modal analysis on wetted piezoelectric vibrator-caudal fin was conducted in ANSYS. The first three working frequencies and corresponding vibration modes were obtained. Then the flow and performance of the piezoelectric pumps with and without caudal fin were simulated by making use of Fluent, and compared with the experimental results. In simulations, when the excitation peak voltage is 100 V and the frequency is 800 Hz, the pumping flow in the piezoelectric pump with caudal fin is 65.34 mL/min, while it is 5.32 mL /min in the pump without the fin. In experiments, when the excitation peak voltage is 100 V and the frequency is 800 and 760 Hz, the pumping flow in the piezoelectric pump with caudal fin is 60.25 and 75.65 mL/min, but it is 4.1 and 4.6 mL/min in the pump without the fin, respectively. This is proved that the extra flow rate in the valve-less piezoelectric pump with caudal fin is mainly caused from the caudal fin driving effect. Based on the comparison of tested and experimental pumping flow rate, the correctness of simulation analysis has been confirmed.ŠĪ