Numerical simulation of turbulent trajectory flow with turnover nappe;

Experimental investigation on the section configuration of jumping nappe;

The arrangement is suitable to the topography of baffle areathe deflecting nappe will extend vertically and longitudinally and diffuse sufficiently with its dissipation rate increasing in the air and outer edge of nappe falling in appropria.

Discussion on the horizontal length of jet flow and its factors of influence;

In order to investigate the feasibility of application of contracted jet with flaring gate pier for high arch dams, the authors conducted a series of experimental survey on the plunging nappe under different water heads over weir and different angles of outlet on the basis of the theoretical analysis about the mechanism of the jet dispersion.

Velocity and hydrodynamic pressure distributions produced by high arch dam water jets in a water cushion pool;

The turbulent jet theory and water flow momentum equation are used to establish the mathematic model for calculating bedrock scoured balance depth of river bed under the action of left-right collision of water jet from high arch dam in considering 3-D diffusion,leakage collision flow and collision energy losses of water jet dispersion in the air.