TY  - CPAPER
AB  - We investigate the Rotor-Stator Interaction in a pump-turbine reduced scale model by considering fluid-structure coupling. The pressure fluctuations amplitude in the rotor-stator vaneless gap has generally been shown to increase linearly with the operating specific energy, subjecting the pump-turbines components to high stresses at high head operations. However, the present paper shows that the guide vanes vibratory properties may have a strong influence on the amplitude of the pressure fluctuations which are due to the Rotor-Stator Interaction. Thus, their amplitude may locally drop by 50% close to guide vanes reaching resonance.
T1  - Influence of the Pump-Turbine Guide Vanes Vibrations on the Pressure Fluctuations in the Rotor-Stator Vaneless Gap
DA  - 2011
AU  - Roth, Steven
AU  - Hasmatuchi, Vlad
AU  - Botero, Francisco
AU  - Farhat, Mohamed
AU  - Avellan, François
JF  - Proceedings of the 4th International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems
N1  - Hydrodyna
ID  - 167186
KW  - Hydraulic machines
KW  - Pump-turbines
KW  - Fluid-structure coupling
KW  - Rotor-stator interaction
KW  - Guide vanes cascade
KW  - Wicket gates cascade
UR  - http://infoscience.epfl.ch/record/167186/files/IAHR-WG2011Paper.pdf
ER  -