The Spillway Discharge Of Shuipoxia Hydropower Staionand Simulation Three-dimensional

In hydropower construction, some issues are often encountered such as the conveyance capacity ofdischarge structure, shape optimization and energy dissipation and erosion control of hydro-junctiondownstream and so on.The physical model test is usually used to solve these problems in traditionalmethods.In recently years, with the continuous improvement of computer performance and the rapiddevelopment of computational fluid dynamics,the numerical simulation method can be used in the studyof part or all of the discharge of hydraulic structures, which not only provides complete flowinginformation of internal water flow of hydraulic structures to engineers, but also liberates human in agreater extent and saves finance and time. Mathematical models and physical models are increasinglyand closely integrated as an important means in solving the problem of discharge of hydraulicengineering.In this paper, By means of software FLUENT, establishing numerical simulation region, usingstructured grids and implicit method and in addtion,the k—ε turbulent model is used to close Reynodsequations, volume of fluid(VOF) method is used to track the free water surface, the flow state ofSpillway with surface outlet of ShuiPoXia hydropower station is simulated in the method ofthree-dimensional numerical simulation according to the steady flowabout the discharge capacity,flowing information of internal water flow of hydraulic structures, shape optimization of hydraulicstructures and energy dissipation and erosion control of hub downstream etc. of ShuiPoXia hydropowerstation. The conclusion shows that the calculation results that the overflow weir discharge capacity andthe water surface profile and the pressure distribution and velocity distribution are in good compliancewith the measured data.