Analysis of Correlation Characteristics of Pump-turbine under Different Cavitation Numbers

doi:10.6041/j.issn.1000-1298.2020.01.014

	Analysis of Correlation Characteristics of Pump-turbine under Different Cavitation Numbers
	Li, Qifei1,2 ; Chen, Xiangyu 1; Meng, Qing 1; Cai, Ting 1; Zhou, Feng 1; Wei, Xianzhu 3
	2020-01-25
发表期刊	Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
ISSN	10001298
卷号	51 期号:1 页码:130-138
摘要	Aiming to study the cavitation characteristics under different cavitation numbers based on the pump-turbine of a pumped-storage power station, the SST k-ω turbulence model and the Zwart cavitation model were used to calculate the full flow path under different cavitation numbers. The unsteady numerical calculations were carried out and compared with the experimental results. The turbulent kinetic energy distribution of the intermediate flow surface and the distribution of cavitation on the blades under different cavitation numbers were analyzed. The correlation between cavitation distribution area and the runner inner channel vortices were discussed. The results showed that when the pump-turbine was operated under pump conditions, its vaneless had obvious turbulent kinetic energy, and the turbulent energy distribution was obvious, showing an irregular ring shape distributed. The bubble distribution of the blade was mainly on the suction surface of the blade, and the turbulent energy of the suction surface of the blade was higher than that of the pressure surface. The vortex inside the runner was mainly generated near the exit of the runner, and close to the suction surface of the blade. The size and number of vortices had a certain relationship with the distribution of bubble on the blades. The generation of bubble led to the poor flow path and exacerbated the generation of vortices. © 2020, Chinese Society of Agricultural Machinery. All right reserved.
关键词	Hydraulic turbines Kinetic energy Kinetics Pumped storage power plants Pumps Turbulence models Vortex flow Bubble distributions Cavitation characteristics Correlation characteristics K-Omega turbulence model Numerical calculation Pumped storage power station Turbulent kinetic energy Turbulent kinetic energy distribution
DOI	10.6041/j.issn.1000-1298.2020.01.014
收录类别	EI
语种	中文
出版者	Chinese Society of Agricultural Machinery
EI入藏号	20201408375848
EI主题词	Cavitation
EI分类号	611.1 Hydroelectric Power Plants - 617.1 Hydraulic Turbines - 618.2 Pumps - 631.1 Fluid Flow, General - 631.1.1 Liquid Dynamics
来源库	Compendex
分类代码	611.1 Hydroelectric Power Plants - 617.1 Hydraulic Turbines - 618.2 Pumps - 631.1 Fluid Flow, General - 631.1.1 Liquid Dynamics
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115720
专题	能源与动力工程学院新能源学院
作者单位	1.School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Key Laboratory of Fluid Machinery and Systems, Lanzhou; Gansu Province; 730050, China; 3.Harbin Institute of Large Electric Machinery, Harbin; 150040, China
第一作者单位	新能源学院
第一作者的第一单位	新能源学院
推荐引用方式 GB/T 7714	Li, Qifei,Chen, Xiangyu,Meng, Qing,et al. Analysis of Correlation Characteristics of Pump-turbine under Different Cavitation Numbers[J]. Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,2020,51(1):130-138.
APA	Li, Qifei,Chen, Xiangyu,Meng, Qing,Cai, Ting,Zhou, Feng,&Wei, Xianzhu.(2020).Analysis of Correlation Characteristics of Pump-turbine under Different Cavitation Numbers.Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,51(1),130-138.
MLA	Li, Qifei,et al."Analysis of Correlation Characteristics of Pump-turbine under Different Cavitation Numbers".Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery 51.1(2020):130-138.