Influence of the Pump-Turbine Guide Vanes Vibrations on the Pressure Fluctuations in the Rotor-Stator Vaneless Gap

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.


Publié dans:
Proceedings of the 4th International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems
Présenté à:
4th IAHR International Meeting on Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Belgrade, Serbia, October 26-28, 2011
Année
2011
Mots-clefs:
Note:
Hydrodyna
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 Notice créée le 2011-06-30, modifiée le 2019-01-23

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