Experimental and Numerical Investigation of Tip Leakage Vortex Cavitation in Water-jet Pump

被引：2
作者：
Long, Y. [1 ]
Zhou, Z. [1 ]
Li, N. [2 ]
Zhang, M. [1 ]
An, C. [1 ]
Chen, Y. [1 ]
Zhu, R. [1 ]
机构：
[1] Jiangsu Univ, Natl Res Ctr Pumps, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Marine Design & Res Inst China, Shanghai 200011, Peoples R China
来源：
JOURNAL OF APPLIED FLUID MECHANICS | 2024年 / 17卷 / 06期
基金：
中国博士后科学基金;
关键词：
Water-jet pump; Cavitation; Tip leakage vortex cavitation; Pressure pulsation; High speed photography;
D O I：
10.47176/jafm.17.6.2369
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
During the operation of a water -jet pump, cavitation generates noise and vibration, causes surface erosion of the hydraulic components, and reduces the performance of the pump. Suppressing the cavitation is beneficial for improving the stability of the energy system of the water -jet pump. In order to investigate the mechanism of cavitation suppression and optimize the cavitation performance of the water -jet pump, the unsteady cavitation flow was studied by numerical simulation and experiment in this paper. Using high-speed photography technology on a closed test platform, the cavitation flow structures in the water -jet pump were captured, and the physical process of cavitation evolution was revealed. Based on this, in order to obtain the cavitation flow characteristics closely related to the cavitation performance, the cavitation flow in the impeller tip clearance was studied by numerical simulation, the vorticity variation rate in the tip clearance was analyzed, the effects of different cavitation conditions on the vorticity in the tip clearance were revealed. Additionally, this paper analyzed the pressure pulsation characteristics of the tip clearance under different cavitation conditions, and emphatically analyzed the influence of the cavitation flow on the tip clearance pressure pulsation.
引用
收藏
页码：1191 / 1203
页数：13
相关论文
共 28 条
[1]   An Experimental Study on Vibration Signatures for Detecting Incipient Cavitation in Centrifugal Pumps Based on Envelope Spectrum Analysis [J].
Al-Obaidi, A. R. ;
Towsyfyan, H. .
JOURNAL OF APPLIED FLUID MECHANICS, 2019, 12 (06) :2057-2067
[2]   Experimental study on gas-liquid flow patterns and bubble size in a high-speed rotating impeller of a three-stage centrifugal pump [J].
Chang, Liang ;
Xu, Qiang ;
Yang, Chenyu ;
Su, Xiaobin ;
Wang, Hanxuan ;
Guo, Liejin .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2023, 145
[3]   Investigation on leakage vortex cavitation and corresponding enstrophy characteristics in a liquid nitrogen inducer [J].
Chen, Zhandong ;
Yang, Shidong ;
Li, Xiaojun ;
Li, Yongpeng ;
Li, Linmin .
CRYOGENICS, 2023, 129
[4]   Experimental investigation of characteristics of tip leakage vortex cavitation-induced vibration of a pump [J].
Gong, Bo ;
Zhang, Zhengchuan ;
Feng, Chao ;
Yin, Junlian ;
Li, Ning ;
Wang, Dezhong .
ANNALS OF NUCLEAR ENERGY, 2023, 192
[5]   Flow structure and modeling issues in the closure region of attached cavitation [J].
Gopalan, S ;
Katz, J .
PHYSICS OF FLUIDS, 2000, 12 (04) :895-911
[6]   Influence of rotating speed on tip leakage vortex in a mixed flow pump as turbine at pump mode [J].
Han, Yadong ;
Tan, Lei .
RENEWABLE ENERGY, 2020, 162 :144-150
[7]   Experimental and numerical investigations of cavitation evolution in a high-speed centrifugal pump with inducer [J].
Huan, Yu-ying ;
Liu, Yao-yao ;
Li, Xiao-jun ;
Zhu, Zu-chao ;
Qu, Jing-tian ;
Zhe, Lin ;
Han, An-da .
JOURNAL OF HYDRODYNAMICS, 2021, 33 (01) :140-149
[8]   Multi-objective optimization of the flush-type intake duct for a waterjet propulsion system [J].
Huang, Renfang ;
Dai, Yuanxing ;
Luo, Xianwu ;
Wang, Yiwei ;
Huang, Chenguang .
OCEAN ENGINEERING, 2019, 187
[9]   Numerical investigation of cavitation-vortex interaction in a mixed-flow waterjet pump [J].
Huang, Renfang ;
Ji, Bin ;
Luo, Xianwu ;
Zhai, Zhihong ;
Zhou, Jiajian .
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 2015, 29 (09) :3707-3716
[10]   Cavitation Characteristics during Startup Process of a Condensate Pump with Splitter Blades [J].
Kang, C. ;
Lu, C. ;
Seah, K. G. ;
Zhang, W. .
JOURNAL OF APPLIED FLUID MECHANICS, 2022, 15 (04) :1099-1109
123