Research on Cavitation Suppression Effect of Tiny Blade in the Shroud of Centrifugal Pump

	Research on Cavitation Suppression Effect of Tiny Blade in the Shroud of Centrifugal Pump
	Zhao, Weiguo1,2 ; Zhou, Zhongliang 1; Luo, Yunxia 1; Zhang, Cuilian 1; Kou, Xiangru 1
	2022-11-01
发表期刊	Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
ISSN	0253-231X
卷号	43 期号:11 页码:2926-2936
摘要	A low specific speed centrifugal pump was used as a research object, and a method to suppress cavitation by arranging a non-connected tiny blade structure on the shroud of the centrifugal pump was proposed, and four schemes were designed for the study. Numerical simulations were performed using ANSYS CFX and compared with the experimental results, and the better scheme was selected for comparative analysis of flow lines, turbulent kinetic energy, pressure, cavity volume and pressure pulsations with the original model. The results show that the arrangement of tiny blades on the shroud of the impeller can induce relatively high pressure near the impeller inlet, slow down the diffusion of the low-pressure region and comb the flow field structure, which has a suppressive effect on cavitation. The addition of tiny blades in the better position has less effect on the external characteristics of the pump and reduces the critical cavitation margin and increase the breaking head. During the initial and developmental stages of cavitation, the tiny blades reduce the intensity of vortices in the flow channel and optimize the flow field structure. During the cavitation severe stage, the tiny blades strengthen the vortex intensity; under each cavitation margin, the tiny blades reduce the pressure pulsation amplitude, making the pump operation more stable. © 2022, Science Press. All right reserved.
关键词	Centrifugal pumps Channel flow Flow fields High pressure effects Impellers Kinetic energy Kinetics Numerical models Vortex flow ANSYS-CFX Blade structures Cavitation suppression Flow field structure Low specific speed centrifugal pump Low specific-speed Pressure pulsation Research object Suppression effects Tiny blade
收录类别	EI
语种	中文
出版者	Science Press
EI入藏号	20224613124708
EI主题词	Cavitation
EI分类号	601.2 Machine Components ; 618.2 Pumps ; 631.1 Fluid Flow, General ; 631.1.1 Liquid Dynamics ; 921 Mathematics ; 931 Classical Physics ; Quantum Theory ; Relativity
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/160626
专题	能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.State Key Laboratory of Gansu Fluid Machinery and Systems, Lanzhou; 730050, China
第一作者单位	能源与动力工程学院
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Zhao, Weiguo,Zhou, Zhongliang,Luo, Yunxia,et al. Research on Cavitation Suppression Effect of Tiny Blade in the Shroud of Centrifugal Pump[J]. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics,2022,43(11):2926-2936.
APA	Zhao, Weiguo,Zhou, Zhongliang,Luo, Yunxia,Zhang, Cuilian,&Kou, Xiangru.(2022).Research on Cavitation Suppression Effect of Tiny Blade in the Shroud of Centrifugal Pump.Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics,43(11),2926-2936.
MLA	Zhao, Weiguo,et al."Research on Cavitation Suppression Effect of Tiny Blade in the Shroud of Centrifugal Pump".Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 43.11(2022):2926-2936.