|
|
|
| Analysis on flow field in Vshape valveless piezoelectric pump with single oscillatordual chamber |
| HE Xiu-Hua, LI Fu, BI Yu-Shi, DENG Zhi-Dan, WANG Jian |
| (School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China) |
|
|
|
|
Abstract A kind of Vshape valveless piezoelectric pump with single oscillatordual chamber was designed and its geometric model was created.Its internal flows were numerically analyzed by the dynamic mesh model in Fluent. The unsteady flow field in the piezoelectric pump was simulated and the pump unsteady characteristics, such as instantaneous pressure, velocity and flow rate in different periods of time, were obtained. If the dynamic characteristics of the twochip piezoelectric vibrator was effectively combined with the fluid dynamics, the estimated pump performance would agree with the theoretical characteristics of valveless piezoelectric pumps, it is suggested that the dynamic mesh model is feasible in the numerical simulations of flow in such a pump. The effects of driving frequency, amplitude of the piezoelectric vibrator, pump chamber height and location of the Vtube on the pump output performance were studied by means of considerable numerical simulations. The simulation results show that the maximum outlet flow is obtained at the driving frequency of 250 Hz. Moreover， the greater the amplitude of the piezoelectric vibrator, the higher the outlet flow. When a set of amplitude, pump chamber height and Vtube location are determined reasonably, the output of a piezoelectric pump can get the best performance.
|
|
Received: 18 November 2011
Published: 30 March 2012
|
|
|
|
| 参考文献(References)［1］ Woias Peter. Micropumps—past, progress and future prospects ［J］. Sensors and Actuators, B: Chemical, 2005, 105(1):28-38.［2］ Ivano Izzo, Dino Accoto, Arianna Menciassi, et al. Modeling and experimental validation of a piezoelectric micropump with novel nomovingpart valves［J］. Sensors and Actuators, A: Physical, 2007, 133(1): 128-140.［3］ Cheng Yihlin, Lin Jianghong. Manufacture of threedimensional valveless micropump［J］. Journal of Materials Processing Technology, 2007, 192／193:229-236.［4］ Kan Junwu, Tang Kehong, Liu Guojun, et al. Development of serialconnection piezoelectric pumps ［J］. Sensors and Actuators, A: Physical, 2008, 144(2): 321-327.［5］ Geipel A, Goldschmidtboing F, Doll A, et al. An implantable active microport based on a selfpriming highperformance twostage micropump ［J］. Sensors and Actuators, A: Physical, 2008, 145／146(1): 414-422.［6］ 吴丽萍.单振子双腔体压电泵的理论与实验研究［D］. 长春:吉林大学机械学院,2004.［7］ 何秀华,张睿. “V”形无阀压电泵理论分析与数值模拟［J］.排灌机械, 2008,26 (4): 30-34.He Xiuhua, Zhang Rui. Theoretical analysis and numerical simulation of valveless piezoelectric pump with Vshape tube ［J］. Drainage and Irrigation Machinery, 2008, 26(4):30-34. (in Chinese)［8］ 刘长运,赵学增,陈芳，等.运动边界问题流场仿真技术的发展［J］.液压与气动,2005(10):5-8.Liu Changyun, Zhao Xuezeng, Chen Fang, et al. The development of moving boundary problem of flow field simulation technology \[J\]. Chinese Hydraulic & Pneumatic, 2005(10):5-8. (in Chinese)［9］ 郝继光,姜毅,韩书永，等.一种新的动网格更新技术及其应用［J］.弹道学报, 2007, 19(2): 88-92.Hao Jiguang, Jiang Yi, Han Shuyong, et al. The update technology and application of a new dynamic mesh ［J］. Ballistic Journal, 2007, 19(2):88-92. (in Chinese)［10］ 蒋权英.涡旋阀压电泵三维动态模拟与空化研究［D］.镇江:江苏大学能源与动力工程学院,2008. |
|
|
|
