Large eddy structure and characteristics of conical valve dissipation pool flooding jet

quasi-sequential structure;  flooding shock jets;  annular vortex;  Wall turbulence

Combined with the model test of Panshi Reservoir water transmission hole, modern turbulence theory is applied to observe and qualitatively analyze the complex flow structure in the conical valve drainage tank downstream of the water conveyance tunnel, and the dissipation is analyzed mechanically from the perspective of turbulence mechanics. It is believed that the significant feature of the flow state in the cone valve damping cell is that there is a large range of winding and suction zone at the bottom of the cone, the flow state has strong three-dimensional nature, and the large-scale vortex sequence structure plays a leading role in the flow velocity distribution, pressure distribution and energy dissipation in the pool, which lays a foundation for the further quantitative calculation of the flow state and energy dissipation in the cone valve damping cell.