Article

Journal of Applied Mechanics and Technical Physics

, Volume 51, Issue 4, pp 590-597

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

  • V. B. KurzinAffiliated withLavrent’ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences Email author 
  • , V. S. SeleznevAffiliated withLavrent’ev Institute of Hydrodynamics, Siberian Division, Russian Academy of Sciences

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Abstract

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 words

hydroturbine vibrations cascade acoustics stability natural oscillations flutter