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.

Published in:
Proceedings of the 20th IAHR Symposium, Charlotte, North Carolina, USA, 1, 1-11
Presented at:
20th IAHR Symposium on Hydraulic Machinery and Systems, Charlotte, North Carolina, USA, August 6-9, 2000
International Association For Hydraulic Research
Using Smart Source Parsing 7-9 3

Note: The status of this file is: EPFL only

 Record created 2005-11-04, last modified 2018-05-08

Rate this document:

Rate this document:
(Not yet reviewed)