文献类型：期刊文献

英文题名：Working principle and flux characteristics of valueless piezoelectric pump with Y-shape tubes for transporting cells and macromolecule

作者：Zhang, Jianhui[1,2]; Lu, Jizhuang[2]; Xia, Qixiao[3]; Kou, Jie[4]; Ren, Gang[2]

第一作者：Zhang, Jianhui

通讯作者：Zhang, J.

机构：[1] Precision Driving Laboratory, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China; [2] College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China; [3] College of Mechanical and Electronic Engineering, Beijing Union University, Beijing 100020, China; [4] Department of Mechanical Engineering, Clemson University, Clemson SC29634-0921, United States

第一机构：Precision Driving Laboratory, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

通讯机构：[1]Precision Driving Laboratory, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

年份：2008

卷号：44

期号：9

起止页码：92-99

外文期刊名：Jixie Gongcheng Xuebao/Chinese Journal of Mechanical Engineering

收录：EI(收录号：20084111636340)

语种：英文

外文关键词：Finite volume method - Flow of fluids - Fluxes - Macromolecules - Piezoelectric devices - Piezoelectricity - Pollution - Vibration analysis - Vibrators

摘要：A valueless piezoelectric pump with Y-elements is assembled by installing two inverted Y-shape tees to the chamber, which is composed inlet, outlet, piezoelectric vibrator, chamber and other parts. This pump has no chemical and electromagnetic pollution sources, nor periodic valves opening or closing. It also characters potentiality to be miniaturized and integrated. This pump facilitates to transfusing living cells and macromolecular compound because only lower-intensity eddy field occurs when pump fluid flows through the Y-elements. Firstly, the structure of the new valueless piezoelectric pump with Y-elements is presented. Then, pressure distribution and velocity vector distribution in the Y-elements are simulated by means of finite volume method, which proves when fluid flows through Y-elements the eddy field is far lower than that in diffuser/nozzle elements. Simulations also show that the fluctuations of the pressure and velocity in Y-elements are much lower. Thirdly, the equation of volume change is built through analyzing vibration of the piezoelectric vibrator. And the theoretical relationship between the flow rate and the frequencies of piezoelectric vibrator is established. Finally, through the flow test this device with Y-elements is proved to have the characteristics of pump, thus proving the correctness of the theoretical model presented above.