The Three-dimensional Numerrical Simulation Of Qilinsi Sluice Gate Discharge

Discharge capacity,size optimization and other issues of discharge structures often come up during the construction of hydropower projects.These problems are often solved by physical model tests.In recent years,with the increasingly development of computing technology and computer performance,More and more hydro-engineer apply the computer to the numerical calculation of water conservancy projects.Inexpensive,fast,complete information and other advantages gradually come up and were accepted in engineering field.Numerical simulation has become an important complement to the physical model test.In this paper,the BailongjiangQilin Temple hydropower project is taken as the subject.According to the basic data provided by the design,the discharge process is numerically simulated.The main results are as follows:(1)This paper introduces the theory of numerical simulation,summarizes the research progress of numerical simulation method,establishes the three-dimensional numerical simulation area by CAD software,uses Gambit for mesh generatio?FLUENT commercial software and Standard k-? turbulence numerical model Reynods equation,The VOF method is used to track the free water surface.The SIMPLE algorithm is used to carry out the pressure correction.The three dimensional flow field numerical simulation is carried out for Discharge of river-bed hydropower station with low head and large flow(2)Compare the calculation of the various conditions of the flood gates?downstream flow field discharge capacity?water lines?flow rate and pressure distribution with test data.we found that the calculated values are in good agreement with the experimental values.Therefore,the numerical simulation can provide a reliable basis for the design of the discharge engineering building,help improve the efficiency of hydraulic design,save money and provide pre-forecast and guidance for physical model testing.