Influence of cavitation characteristics of groove structure for centrifugal pump

被引：0

作者：

Zhao W. ^{[1
,2
]}

Zhang X. ^{[1
]}

Yang L. ^{[1
]}

Li J. ^{[1
]}

机构：

[1] College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou

[2] State Key Laboratory of Gansu Fluid Machinery and Systems, Lanzhou University of Technology, Lanzhou

来源：

Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2024年 / 52卷 / 07期

关键词：

cavitation characteristics; centrifugal pump; groove structure; numerical simulation; pressure fluctuation;

D O I：

10.13245/j.hust.240724

中图分类号：

学科分类号：

摘要：

Taking the low specific speed centrifugal pump as the research object，and a method to suppress cavitation by arranging a groove structure on the leading edge of the blade was proposed． The modified SST k- ω turbulence model and the Zwart-Gerber-Belamri (Z-G-B) cavitation model was combined to perform numerical simulations of the centrifugal pump，and the simulations were compared with experimental results． The results show that the centrifugal pump and reduces the critical cavitation margin． At different cavitation stages，the vortex intensity is reduced，the flow state of the surrounding flow field is optimized，relative high pressure is induced，and the vorticity field is improved．The bubble volume of centrifugal pumps under various cavitation margins is reduced，and the main frequency amplitude of pressure pulsation at multiple monitoring points is reduced． The groove structure effectively limits the cavitation development of the centrifugal pump，making the operation of the pump more stable. © 2024 Huazhong University of Science and Technology. All rights reserved.

引用

页码：139 / 144

页数：5

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