文献类型：期刊文献

中文题名：Analysis on Flow Field of the Valveless Piezoelectric Pump with Two Inlets and One Outlet and a Rotating Unsymmetrical Slopes Element

英文题名：Analysis on Flow Field of the Valveless Piezoelectric Pump with Two Inlets and One Outlet and a Rotating Unsymmetrical Slopes Element

作者：Xia Qixiao[2];Zhang Jianhui[1];Lei Hong[2];Cheng Wei[1]

第一作者：夏齐霄

通讯作者：Zhang, JH[1]

机构：[1]Nanjing Univ Aeronaut & Astronaut, Precis Driving Lab, Nanjing 210016, Jiangsu, Peoples R China;[2]Beijing Union Univ, Coll Mech & Elect Engn, Beijing 100020, Peoples R China

第一机构：Nanjing Univ Aeronaut & Astronaut, Precis Driving Lab, Nanjing 210016, Jiangsu, Peoples R China

通讯机构：[1]corresponding author), Nanjing Univ Aeronaut & Astronaut, Precis Driving Lab, Nanjing 210016, Jiangsu, Peoples R China.

年份：2012

卷号：25

期号：3

起止页码：474-483

中文期刊名：中国机械工程学报：英文版

外文期刊名：CHINESE JOURNAL OF MECHANICAL ENGINEERING

收录：;EI(收录号：20122315092949);Scopus(收录号：2-s2.0-84861710320);WOS:【SCI-EXPANDED(收录号:WOS:000302282100008)】；CSCD:【CSCD2011_2012】；

基金：This project is supported by National Natural Science Foundation of China (Grant No. 50735002, Grant No. 50775109, and Grant No. 51075201)

语种：英文

中文关键词：无阀压电泵;不对称;可旋转;入口;流场分析;出口;流动阻力;混合比例

外文关键词：piezoelectric; pump; valveless; rotatable; unsymmetrical slopes element

摘要：Typically,liquid pump and liquids mixer are two separate devices.The invention of piezoelectric pump makes it possible to integrate the two devices.Hower,the existing piezoelectric mixing-pumps are larger because the need the space outside the chamber,and another shortcome of them is that they cannot adjust the mixing ratio of two liquids.In this paper,a new piezoelectric pump being capable of integrating mixer and pump is presented,based on the theory of the piezoelectric pump with the unsymmetrical slopes element(USE).Besides the features of two inlets and one outlet,the piezoelectric pump has a rotatable unsymmetrical slopes element(RUSE).When the pump works,two fluids flow into the inlet channels respectively.Then the RUSE controls the ratio of the two flows by adjusting the flow resistances of the two inlet channels.The fluids form a net flow due to the USE principle,while they are mixed into a homogeneous solution due to strong turbulence flow field and complex vortices generated by RUSE in the chamber.And then the solution flows through the outlet.Firstly,the theoretical analysis on this pump is performed.Meanwhile,the flow field in the chamber is calculated and simulated.And then,the relationship between the flows of the two channels and the rotating angle of the RUSE is set up and analyzed.Finally,experiment with the proposed pump is carried out to verify the numerical results.A RUSE with 20° slope angle is used in the experiment.Four sets of data are tested with the RUSE at the rotating angles of 0°,6°,11°,and 16°,respectively,corresponding to the numerical models.The experimental results show that the empirical data and the theoretical data share the same trend.The maximum error between the theoretical flow and the experimental flow is 11.14%,and the maximum error between the theoretical flow ratio of the two inlets and the experimental one is 2.5%.The experiment verified the theoretical analysis.The proposed research provides a new idea for integration of micro liquids mixer and micro liquids pump.
Typically, liquid pump and liquids mixer are two separate devices. The invention of piezoelectric pump makes it possible to integrate the two devices. Hower, the existing piezoelectric mixing-pumps are larger because the need the space outside the chamber, and another shortcome of them is that they cannot adjust the mixing ratio of two liquids. In this paper, a new piezoelectric pump being capable of integrating mixer and pump is presented, based on the theory of the piezoelectric pump with the unsymmetrical slopes element (USE). Besides the features of two inlets and one outlet, the piezoelectric pump has a rotatable unsymmetrical slopes element(RUSE). When the pump works, two fluids flow into the inlet channels respectively. Then the RUSE controls the ratio of the two flows by adjusting the flow resistances of the two inlet channels. The fluids form a net flow due to the USE principle, while they are mixed into a homogeneous solution due to strong turbulence flow field and complex vortices generated by RUSE in the chamber. And then the solution flows through the outlet. Firstly, the theoretical analysis on this pump is performed. Meanwhile, the flow field in the chamber is calculated and simulated. And then, the relationship between the flows of the two channels and the rotating angle of the RUSE is set up and analyzed. Finally, experiment with the proposed pump is carried out to verify the numerical results. A RUSE with 20 degrees slope angle is used in the experiment. Four sets of data are tested with the RUSE at the rotating angles of 0 degrees, 6 degrees, 11 degrees, and 16 degrees, respectively, corresponding to the numerical models. The experimental results show that the empirical data and the theoretical data share the same trend. The maximum error between the theoretical flow and the experimental flow is 11.14%, and the maximum error between the theoretical flow ratio of the two inlets and the experimental one is 2.5%. The experiment verified the theoretical analysis. The proposed research provides a new idea for integration of micro liquids mixer and micro liquids pump.