Unsteady cavitation patterns in a rotor-stator centrifugal hydrodynamic cavitation generator

被引：0

作者：

Wang Y. ^{[1
]}

Yan J. ^{[1
]}

Wang J. ^{[2
]}

Liu H. ^{[1
]}

Dular M. ^{[3
]}

机构：

[1] Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang

[2] School of Shipping and Mechatronic Engineering, Taizhou University, Taizhou

[3] Laboratory for Water and Turbine Machines, Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2018年 / 39卷 / 12期

关键词：

Blunt cavitation; Cavitation; Cavitation generator; Centrifugal pump; Hydrodynamics cavitation; Numerical simulation; Rotor and stator; Trailing vortex cavitation; Visualization experiment; Wedge groove cavitation;

D O I：

10.11990/jheu.201707108

中图分类号：

学科分类号：

摘要：

To study the working mechanism of a high-efficiency hydrodynamic cavitation generator, the irregular cavitation patterns of a rotor-stator centrifugal hydrodynamic cavitation generator were investigated by experimental test and numerical simulation. The simulation result agrees well with the test result. It was found that three different cavitation mechanisms exist in the cavitation generator: blunt body cavitation, trailing vortex cavitation, and wedge grooved cavitation, which were located at the leading edge of the rotator teeth, the rear of the rotator teeth, and the leading edge of stator teeth, respectively. A distinct cavitating flow periodicity was observed on the stator teeth leading edge. The cavitation distribution is not completely symmetrical. The cavitation at the leading edge of the stator teeth mainly occurs between the 5th and 8th volute cross sections, while the cavitation at the leading edge of the rotor teeth occurs primarily between the 8th and 1st volute cross sections, and the change of trailing vortex cavitation after the rotor teeth is small. Furthermore, the void volume content changes periodically, corresponding with the interlaced cycle of a pair of rotor-stators. This study can serve as a reference for the optimization design of centrifugal hydrodynamic cavitation generators. © 2018, Editorial Department of Journal of HEU. All right reserved.

引用

页码：1887 / 1893

页数：6

共 22 条

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