Fluid-Structure Coupling in the Guide Vanes Cascade of a Pump-Turbine Scale Model

The present study concerns fluid-structure coupling phenomena occurring in a guide vane cascade of a pump-turbine scale model placed in the EPFL PF3 test rig. An advanced instrument set is used to monitor both vibrating structures and the surrounding flow. The paper highlights the interaction between vibrating guide vanes and the flow behavior. The pressure fluctuations in the stay vanes region are found to be strongly influenced by the amplitude of the vibrating guide vanes. Moreover, the flow induces different hydrodynamic damping on the vibrating guide vanes depending on the operating point of the pump-turbine.


Published in:
Proceedings of the 25th IAHR Symposium on Hydraulic Machinery and Systems
Presented at:
25th IAHR Symposium on Hydraulic Machinery and Systems, Timisoara, Roumania, September 20-24, 2010
Year:
2010
Keywords:
Laboratories:




 Record created 2010-04-14, last modified 2018-03-17

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