PIV measurement of internal flow in mini centrifugal pump

29th IAHR Symposium on Hydraulic Machinery and Systems

Shigemitsu, T.^1 ; Ogawa, Y.^2 ; Nakaishi, E.^2

Institute of Science and Technology, Tokushima University, 2-1 Minamijyosanjima-cho, Tokushima-city

770-8506, Japan^1

Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minamijyosanjima-cho, Tokushima-city

770-8506, Japan^2

关键词: Electrical devices;    Internal flow condition;    Internal flows;    Large flow rate;    Manufacturing cost;    Maximum Efficiency;    PIV measurements;    Vorticity distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/240/3/032026/pdf
DOI  :  10.1088/1755-1315/240/3/032026

来源: IOP

【 摘 要 】

The diameter of the ventricular assist pump and cooling pump for electrical devices like servers is about a dozen millimetres and these kinds of pumps belong to the mini pump. The internal flow condition of the mini centrifugal pump has to be clarified because there are so many types of mini pumps according to special specifications and shapes. Therefore, in this research, an open impeller was adopted as a mini centrifugal pump with 55mm impeller diameter in consideration of reduction in impeller manufacturing cost and its internal flow was investigated. Since the outlet angle of the test impeller is large, the maximum efficiency flow rate moves to a large flow rate and the relatively high head and efficiency were obtained in large flow rate region. In the present paper, the velocity and vorticity distribution near the volute tongue are shown and the internal flow in the mini centrifugal pump is clarified based on the PIV measurement results.