PUMP-TURBINE

作品数：18被引量：62H指数：6
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Internal flow mechanism for a pump-turbine operated in pump mode under double humps condition
《Science China(Technological Sciences)》2025年第3期110-124,共15页Yongshun ZENG Zhaohui QIAN Weixiang YE Yuning ZHANG Diana PUGA Xianwu LUO 
supported by the National Natural Science Foundation of China(Grant No.52336001);the China Postdoctoral Science Foundation(Grant Nos.2022TQ0168,2023M731895)。
The head-flow rate curve with double humps brings greater challenges to the stable operation of a pump-turbine in pump mode,and the present investigation aims to reveal the formation mechanisms behind it.We performed ...
关键词：PUMP-TURBINE double humps capacity for doing work energy loss vortex evolution 
Flow excitation mechanisms of unbalanced impeller forces after pump power-trip of ultra-high head pump-turbines被引量：1
《Science China(Technological Sciences)》2024年第5期1602-1611,共10页FU XiaoLong LI DeYou LV JingWei YANG Biao WANG HongJie WEI XianZhu 
supported by the National Natural Science Foundation of China(Grant Nos.52079034,and 52209108);the Sichuan Science and Technology Program(Grant No.2023YFQ0021);the China Postdoctoral Science Foundation(Grant Nos.2022M720948,and 2023T160162);the Natural Science Foundation of Heilongjiang Province,China(Grant No.HL2023E058)。
To elucidate the dynamic mechanisms of unbalanced impellers in ultra-high head pump-turbines(PTs),this study employed a one-and three-dimensional coupled method to simulate the pump power-trip(PPT)process of an ultra-...
关键词：ultra-high head pump-turbine pump power-trip unbalanced impeller forces pressure pulsations flow pattern transitions 
High-amplitude pressure fluctuations of a pump-turbine with large head variable ratio during the turbine load rejection process被引量：1
《Science China(Technological Sciences)》2023年第9期2575-2585,共11页FU XiaoLong LI DeYou SONG YeChen WANG HongJie WEI XianZhu 
supported by the National Natural Science Foundation of China(Grant Nos.52209108 and 52079034);Sichuan Science and Technology Program(Grant No.2023YFQ0021);the Natural Science Foundation of Heilongjiang Province,China(Grant No.LH2023E058);China Postdoctoral Science Foundation(Grant No.2022M720948)。
Large-head variable-amplitude pump turbines(PTs) encounter serious transient hydraulic instability issues. To explore the evolution mechanisms of pressure fluctuations(PFs) and flow patterns inside large-head variable...
关键词：large-head variable-amplitude pump turbine load rejection process 1D-3D flow simulation pressure fluctuation flow pattern evolution 
How the radial gap affects the runner’s hydrodynamic damping characteristic of a pump-turbine:A physical experiment on a rotating disc被引量：3
《Journal of Hydrodynamics》2023年第4期736-745,共10页Yong-shun Zeng Xin Qi Mian-mian Bai Ling-jiu Zhou Zhi-feng Yao 
Project supported by the National Natural Science Foundation of China(Grant Nos.52179092,51879266);supported by the 2115 Talent Development Program of China Agricultural University.
Clarifying how radial gap affects the vibration characteristic of a disc-like structure is of importance in engineering applications,such as in evaluating the operational stability of a runner of a pump turbine.In the...
关键词：Rotating disc radial gap rotating speed natural frequency hydrodynamic damping 
Investigation on the relationship between hydraulic loss and vortex evolution in pump mode of a pump-turbine被引量：6
《Journal of Hydrodynamics》2022年第4期555-569,共15页Yong-lin Qin De-you Li Hong-jie Wang Zhan-sheng Liu Xian-zhu Wei Xiao-hang Wang 
the National Natural Science Foundation of China(Grant No.51876047);the China Postdoctoral Science Foundation Funded Projection(Grant No.2018M630353);the Industrial Prospect and Key Core Technology of Jiangsu Province(Grant No.BE2019009-1).
Hydraulic loss and vorticity are two most common methods in analyzing the flow characteristics in hydro-machine,i.e.,centrifugal pump,Francis turbine,etc.While the relationship and correlation between hydraulic loss a...
关键词：Hydraulic loss ENSTROPHY vorticity transportation pearson correlation coefficient 
Transient simulation and analysis of the simultaneous load rejection process in pumped storage power stations using a 1-D-3-D coupling method被引量：4
《Journal of Hydrodynamics》2021年第5期979-991,共13页Cheng-cheng Yin Wei Zeng Jian-dong Yang 
supported by the Open Research Fund Program of the State Key Laboratory of Water Resources and Hydropower Engineering Science,Whan University(Grant No.2017SDG01).
The load rejection imposes a danger in the pumped storage hydropower plants(PSPs),especially when two or more pump turbines reject their loads simultaneously.In this paper,the simultaneous load rejection scenarios in ...
关键词：Pump-turbine pumped hydro computational fluid dynamics(CFD) hydraulic transient load rejection 
Investigation on reversible pump turbine flow structures and associated pressure field characteristics under different guide vane openings被引量：5
《Science China(Technological Sciences)》2019年第11期2052-2074,共23页BINAMA Maxime SU WenTao CAI WeiHua LI FengChen WEI XianZhu MUHIRWA Alex GONG RuZhi WEKESA David W 
supported by the National Natural Science Foundation of China(Grant No.51606050);Chinese Postdoctoral Science Foundation(Grant No.2016M591527);Heilongjiang Postdoctoral Fund(Grant No.LBH-Z16057);Natural Science Foundation of Heilongjiang Province(Grant No.E2017038);the Fundamental Research Funds for the Central Universities(Grant No.HIT.NSRIF.2019062)
The use of reversible pump turbines(RPT) within pumped storage power plants goes with prolonged periods of off-design operating conditions, which leads to the onset of operating mode-dependent instabilities. In order ...
关键词：REVERSIBLE PUMP-TURBINE flow UNSTEADINESS pressure PULSATION guide VANE OPENING numerical simulation 
Unstable flow characteristics in a pump-turbine simulated by a modified Partially-Averaged Navier-Stokes method被引量：8
《Science China(Technological Sciences)》2019年第3期406-416,共11页YANG Dandan LUO XianWu LIU DeMin HUANG RenFang ZHU ZuChao 
supported by the National Natural Science Foundation of China(Grant No.51536008);Beijing Natural Science Foundation(Grant No.3182014);Science and Technology on Water Jet Propulsion Laboratory(Grant No.61422230103162223004);State Key Laboratory for Hydroscience and Engineering(Grant No.sklhse-2017-E-02)
Positive slope characteristics are very important for the safe and stable operation of a pump-turbine. In this study, the unsteady flows in a pump-turbine at pump mode are investigated numerically. To predict the posi...
关键词：PUMP-TURBINE positive slope MODIFIED Partially-Averaged Navier-Stokes(MPANS) model angle of attack(AOA) Lagrangian coherent structure(LCS) 
Dynamic instability of a pump-turbine in load rejection transient process被引量：7
《Science China(Technological Sciences)》2018年第11期1765-1775,共11页FU XiaoLong LI DeYou WANG HongJie ZHANG GuangHui Li ZhengGui WEI XianZhu 
supported by Open Fund of Key Laboratory of Fluid and Power Machinery(Xihua Uninversity);Ministry of Education Sichuan(Grant Nos.SZJJ-2017-089 and SZJJ-2017-100-1-001);Open Research Fund Program of State Key Laboratory of Hydroscience and Engineering(Grant No.sklhse-2018-E-02)
Load rejection is one of the most crucial transient processes in pump-turbines. However, only a few achievements on the internal flow mechanism of pump-turbines in load rejection processes have been presented. In this...
关键词：PUMP-TURBINE LOAD REJECTION process DYNAMIC INSTABILITY NUMERICAL simulation 
Flow-Induced Instabilities in Pump-Turbines in China被引量：8
《Engineering》2017年第4期504-511,共8页Zhigang Zuo Shuhong Liu 
The authors would like to thank the National Natural Science Foundation of China （51476083） for its financial support.
The stability of pump-turbines is of great importance to the operation of pumped storage power （PSP） stations. Both hydraulic instabilities and operational instabilities have been reported in PSP stations in China. ...
关键词：Pump-turbines Flow-induced instability Pressure fluctuations S-shaped characteristics Positive slopes 
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