某新建生态水电站有压隧洞三维数值模拟研究OA

In order to study the hydraulic characteristics of water flow pattern,velocity and pressure in the tunnel intersection of the built flood discharging tunnel and new power tunnel,numerical simulation is adopted to carry out three-dimensional numerical calculation for the area to check the reasonableness of the engineering design.The results of the study found that there are water flow velocity difference and pressure difference in the intersection during the power generation condition,and there is a vortex on the left side of the left chamber along with the water flow;during the flood discharge,the dynamic water pressure on the water surface at the first end of the middle pier is the largest,and the hydrostatic pressure on the water surface of the back surface has a negative pressure situation.The water flow in the connecting forks is complicated,and the maximum value of the extracted section compressive stress is 0.15 MPa,and the maximum value of tensile stress is-0.12 MPa,which are smaller than the design value.The research results can provide reference for the same engineering design.