The Section Model Test And Numerical Simulation Of The Juting Hydropower Station

Some issues in hydropower construction are often encountered such as the conveyancecapacity of discharge structure, shape optimization， energy dissipation and erosion controldownstream of hydro-junction and so on. The physical model test as traditional methods isusually used to solve these problems. In recently years, with the continuous improvement ofcomputer performance and the rapid development of computational fluid dynamics, thenumerical simulation method can be used in the study of part or all of the discharge ofhydraulic structures, which not only provides complete flowing information of internal waterflow of hydraulic structures to engineers, but also liberates human in a greater extent andsaves finance and time. Mathematical models and physical models are increasingly andclosely integrated as an important means in solving the problem of discharge of hydraulicengineering.In this paper, Jialingjiang Juting hydropower station project is used as a research object.The discharge capacity, flowing information of internal water flow of hydraulic structures,shape optimization of hydraulic structures, scour downstream of hydraulic structures and etc.for Juting hydropower station is studied through hydraulic model test, and simulated bysoftware FLUENT.The hydraulic model of Juting hydropower station is based on gravity similar theory andbuild in accordance with the design data. the flow discharge test was carried out at first andsome problems is discoveried for the original design scheme, so a number of modificationsand optimizations are made focusing on the problems, and finally the optimized shape ofbeast wall and the operation ways of gate is determined.By means of FLUENT software, a calculation region is established, and the flow fieldsof discharge structures of Juting hydropower station is simulated by a3D turbulent model, inwhich the standardk two-equation model is adopted, governing equation is discretizedby the finite volume method and VOF method is used to deal with free water surface. Thecalculation results shows that discharge capacity of the overflow weir, the water surfaceprofile, the pressure distribution and velocity distribution are in good compliance with themeasured data.