Mechanism of emergence of intense vibrations of turbines on the Sayano-Shushensk hydro power plant

Journal of Applied Mechanics and Technical Physics (Impact Factor: 0.35). 07/2010; 51(4):590-597. DOI: 10.1007/s10808-010-0075-1


It is demonstrated that the level of vibrations of turbines on the Sayano-Shushensk hydro power plant is enhanced by the capability
of a compressible fluid to perform its own hydroacoustic oscillations (which can be unstable) in the turbine duct. Based on
the previously obtained results of solving the problem of natural hydroacoustic oscillations in the turbine duct and some
ideas about turbine interaction with an unsteady compressible fluid flow, results of full-scale studies of turbine vibrations
and seismic monitoring of the dam of the Sayano-Shushensk hydro power plant before and during the accident are analyzed.

Key wordshydroturbine-vibrations-cascade-acoustics-stability-natural oscillations-flutter

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