Parametric Excited Pressure Oscillations In Hydraulic Systems

Parametric Excited Pressure Oscillations In Hydraulic Systems

Paper in proceedings (conference paper)

The first kind of mathematical modelling is based on the method of characteristic, having implied the transfer equations of a hydraulic machine – water turbine. This mathematical model allows time-dependant change of system parameters such as cavitation cavern volume.In this manner the parametric excited pressure oscillations can be analysed taking into account a harmonic excitation. Results of this analysis are compared to pressure oscillations measured at the partial load operation of a pump turbine.

The first kind of mathematical modelling is based on the method of characteristic, having implied the transfer equations of a hydraulic machine – water turbine. This mathematical model allows time-dependant change of system parameters such as cavitation cavern volume.In this manner the parametric excited pressure oscillations can be analysed taking into account a harmonic excitation. Results of this analysis are compared to pressure oscillations measured at the partial load operation of a pump turbine.

parametric oscillationssystem parameters

KOUTNÍK, J.

26.06.2001

NTNU Norwegian University of Science and Technology

Trondheim, Norway

Norwegian University of Science and Technology

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