Dynamic Pressure Measurements on a Model Turbine Runner and their Use in Preventing Runner Fatigue Failure

Hydraulic turbine runners, which operate under a wide range of heads and outputs, are subjected to considerable dynamic forces at off design conditions. Therefore a detailed knowledge of mean and fluctuating pressures is required for a safe design of the runner. A special technique has been developed at EPFL-IMHEF Laboratory for Hydraulic Machines in Lausanne, Switzerland, to measure the pressures on the blade of a model runner with miniature piezo-resistive pressure transducers. It has been successfully used in the Voith Hydro Laboratory during the model test of a large Francis turbine. Typical results are presented and discussed, together with their transposition to prototype conditions and application in the dynamic stress and fatigue analysis of the runner.


Publié dans:
Proceedings of the 20th IAHR Symposium, Charlotte, North Carolina, USA, 1, 1-11
Présenté à:
20th IAHR Symposium on Hydraulic Machinery and Systems, Charlotte, North Carolina, USA, August 6-9, 2000
Année
2000
Publisher:
International Association For Hydraulic Research
Note:
Using Smart Source Parsing 7-9 3
Laboratoires:


Note: Le statut de ce fichier est: Seulement EPFL


 Notice créée le 2005-11-04, modifiée le 2019-08-12

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