Analysis and test on influence of caudal-fin on performance of valve-less piezoelectric pump
GE Zhentao1, JI Jing1, LAN Yubin2, HU Xiaoqi3, QIN Tingting1, HU Caiqi1
1. College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao, Shandong 266109, China; 2. College of Engineering, South China Agricultural University, Guangzhou, Guangdong 510642, China;3. College of Engineering and Design, Lishui University, Lishui, Zhejiang 323000, China
Abstract：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.
葛振涛, 纪晶, 兰玉彬, 胡笑奇, 秦婷婷, 胡彩旗. 尾鳍对无阀压电泵性能的影响分析与试验研究[J]. 排灌机械工程学报, 2017, 35(1): 87-92.
GE Zhentao, JI Jing, LAN Yubin, HU Xiaoqi, QIN Tingting, HU Caiqi. Analysis and test on influence of caudal-fin on performance of valve-less piezoelectric pump. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(1): 87-92.
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