Pressure fluctuations in the vaneless space of High-head pump-turbines—A review

In high-head pump-turbines, observations in the engineering field show that the most detrimental hydraulic instabilities are pressure fluctuations in the vaneless space. For example, these pressure fluctuations can cause vibrations and fatigue failures in hydraulic components. It has been recognized that pressure fluctuations in vaneless space are induced primarily by the interactions between runner blades and guide vanes, i.e., rotor–stator interactions (RSI).

[1]  Thomas Staubli,et al.  Unstable Characteristics and Rotating Stall in Turbine Brake Operation of Pump-Turbines , 2011 .

[2]  Christophe Nicolet,et al.  One-Dimensional Modeling of Rotor Stator Interaction in Francis Pump-Turbine , 2006 .

[3]  D M Liu,et al.  Numerical simulation on the "S" characteristics and pressure fluctuation of reduced pump-turbine at start-up condition , 2012 .

[4]  Vlad Hasmatuchi,et al.  Hydrodynamics of a Pump-Turbine Operating at Off-Design Conditions in Generating Mode: Experimental Investigation , 2011 .

[5]  Peter Dörfler,et al.  Flow-Induced Pulsation and Vibration in Hydroelectric Machinery: Engineer’s Guidebook for Planning, Design and Troubleshooting , 2012 .

[6]  Dong Chao.  Vibration Effect of Opening Guide Vanes Desynchronized on Pumped Storage Units , 2011 .

[7]  François Avellan,et al.  Influence of the Pump-Turbine Guide Vanes Vibrations on the Pressure Fluctuations in the Rotor-Stator Vaneless Gap , 2011 .

[8]  Eduard Egusquiza,et al.  Monitoring of Rotor-Stator Interaction in Pump-Turbine Using Vibrations Measured with On-Board Sensors Rotating with Shaft , 2014 .

[9]  Christophe Nicolet,et al.  Hydroacoustic Modeling of Rotor Stator Interaction in Francis Pump-Turbine , 2006 .

[11]  Leqin Wang,et al.  Pressure fluctuation propagation of a pump turbine at pump mode under low head condition , 2014 .

[12]  François Avellan,et al.  Fluid-Structure Coupling in the Guide Vanes Cascade of a Pump-Turbine Scale Model , 2010 .

[13]  Jintao Liu,et al.  Distribution of Pressure Fluctuations in a Prototype Pump Turbine at Pump Mode , 2014 .

[14]  Xin Wang,et al.  Experimental study of the pressure fluctuations in a pump turbine at large partial flow conditions , 2012 .

[15]  Ernesto Casartelli,et al.  Simplified CFD model for flow field investigations at no- load conditions , 2010 .

[16]  Dai Qing-zhong.  Recent Development of Pumped-Storage Units in Japan , 2008 .

[17]  Eduard Egusquiza,et al.  Failure investigation of a large pump-turbine runner , 2012 .

[18]  Liu Jin.  Prediction of Pressure Fluctuation of a Pump-Turbine at No-Load Opening , 2012 .

[19]  Hiroshi Tanaka,et al.  Vibration Behavior and Dynamic Stress of Runners of Very High Head Reversible Pump-turbines , 2011 .

[20]  Jiri Koutnik,et al.  Compressible Simulation of Rotor-Stator Interaction in Pump-Turbines , 2010 .

[21]  Alf Gunnar Backman,et al.  CFD Validation of Pressure Fluctuations in a Pump Turbine , 2008 .

[22]  Narayana Prasad Padhy,et al.  Status of pumped hydro-storage schemes and its future in India , 2013 .

[23]  Baotang Zhuang,et al.  Numerical Simulation of the Unsteady Flow in a High-Head Pump Turbine and the Runner Improvement , 2008 .

[24]  Mohamed Farhat,et al.  Pump-Turbine Rotor-Stator Interactions in Generating Mode: Pressure Fluctuation in Distributor Channel , 2006 .

[25]  J. H. Wagner,et al.  Turbine Rotor-Stator Interaction , 1982 .

[26]  Yin Jun.  Prediction of Pressure Fluctuations of Pump Turbine Under Off-Design Condition in Pump Mode , 2011 .

[27]  U Seidel,et al.  Numerical simulation of hydrodynamics in a pump-turbine at off-design operating conditions in turbine mode , 2012 .

[28]  Ilmar F. Santos,et al.  Frequencies in the Vibration Induced by the Rotor Stator Interaction in a Centrifugal Pump Turbine , 2007 .

[29]  Dezhong Wang,et al.  Effects of water compressibility on the pressure fluctuation prediction in pump turbine , 2012 .

[30]  Christophe Nicolet,et al.  Hydroacoustic simulation of rotor-stator interaction in resonance conditions in Francis pump-turbine , 2010 .

[31]  François Avellan,et al.  Advanced Instrumentation for Measuring Fluid-Structure Coupling Phenomena in the Guide Vanes Cascade of a Pump-Turbine Scale Model , 2010 .

[32]  K. Niikura,et al.  Reduction of Stress Amplitude in the Runner of Ultrahigh Head Pump Turbines. , 1993 .

[33]  Wang Zhengwei.  Rotator-stator interaction induced unsteady-flow simulation , 2001 .

[34]  Zhengwei Wang,et al.  Numerical analysis of unsteady flow behaviour and pressure pulsation in pump turbine with misaligned guide vanes , 2012 .

[35]  Weiwei Hou,et al.  Contact state estimation based on surface-matching in virtual assembly , 2012 .