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  4. Advanced Instrumentation for Measuring Fluid-Structure Coupling Phenomena in the Guide Vanes Cascade of a Pump-Turbine Scale Model
 
conference paper

Advanced Instrumentation for Measuring Fluid-Structure Coupling Phenomena in the Guide Vanes Cascade of a Pump-Turbine Scale Model

Roth, Steven  
•
Hasmatuchi, Vlad  
•
Botero, Francisco
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2010
Proceedings of the ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration & Noise
ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration & Noise

In the present study, the fluid-structure coupling is investigated in the guide vanes of a pump-turbine scale model placed in one of the test rigs of the Laboratory for Hydraulic Machines (EPFL) in Lausanne. The paper focuses on the advanced instrumentation used to get reliable and complete fluid-structure coupling results. Semi-conductor strain gages are installed on three guide vanes which are especially weakened to account for stronger fluid-structure coupling phenomena. These are statically calibrated in terms of torsion torque and bending force. A laser vibrometer is used to measure the vibrating guide vane velocity. Piezo-resistive pressure sensors are placed around the weakened guide vanes to monitor the influence of the structural vibrations on the surrounding flow. A new non-intrusive excitation system is used to get the guide vanes impulse response. The instrument set enables a reliable fluid-structure coupling investigation in hydraulic pump-turbine scale model. Finally, the results show strong coupling between the vibrating guide vanes and the surrounding unsteady flow.

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Type
conference paper
DOI
10.1115/FEDSM-ICNMM2010-30693
Web of Science ID

WOS:000303848800063

Author(s)
Roth, Steven  
Hasmatuchi, Vlad  
Botero, Francisco
Farhat, Mohamed  
Avellan, François  
Date Issued

2010

Publisher

American Soc Mechanical Engineers, Three Park Avenue, New York, Ny 10016-5990 Usa

Published in
Proceedings of the ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration & Noise
Volume

3

Start page

585

End page

597

Subjects

Fluid-Structure Coupling

•

Pump-Turbine

•

Hydraulic Machines

•

Guide vane cascade

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LMH  
Event nameEvent placeEvent date
ASME 2010 7th International Symposium on Fluid-Structure Interactions, Flow-Sound Interactions, and Flow-Induced Vibration & Noise

Montreal, Québec, Canada

1-5 August, 2010

Available on Infoscience
April 14, 2010
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/49348
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