This paper introduces the significance of the study of the high dam aerial water jet nappe flow hydraulic properties and its energy dissipation mechanism.

The results showed that the sheet in space was a multi tulip shaped hollow jet, whose velocity and sheet thickness changed periodically along the nozzle axis.

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.

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.

Rock erosion mechanism of cavitating water jets;

With the application of cavitating water jets in mine engineering, petroleum engineering and rock cut, the theory of cavitating water jets rock erosion is still not unified.

Treating phenol wastewater by hydrogen peroxide assisted with a cavitating water jet;

Cavitation noise is a faint random signal,which is generated by the cavitation bubbles collapse in cavitating water jet.