Гибридное моделирование гидродинамики водосбросных сооружений ГЭС

Abstract

The results of applying a three-dimensional numerical model of a viscous liquid to the problem of calculating the parameters of surface spillways are presented. The model takes into account the pressure distribution profile over the flow depth, which is different from the hydrostatic one. The k -e model of turbulence is used to close the equations of hydrodynamics. Vertical sampling of the flow is performed using an adaptive multi-layer mesh. The main attention is paid to the verification of the numerical model on the available analytical solution and on the results of physical experiments. It is established that the numerical model reproduces well the throughput capacity of surface spillways and the conditions of the interface of the water courses. The good consistency of the pressure profiles obtained in the physical experiment and on the numerical model on the spillway face, as well as the flow parameters determining the conditions of flooding of the hydraulic jump on the example of the spillway of the Zhigulevskaya HPP, is shown.