The Section Numerical Simulation Of The Pianqiao Hydropower Station

In hydropower construction, some issues are often encountered such as the conveyancecapacity of discharge structure, shape optimization, energy dissipation and erosion controldownstream of project and so on, and the physical model test as a traditional method isusually used to solve these problems. However in recent years, with the continuousimprovement of computer performance and the rapid development of computational fluiddynamics, the numerical simulation method can be used in the study of part or all of thedischarge of hydraulic structures, which not only provides complete flowing information ofinternal water flow of hydraulic structures to engineers, but also liberates human in a greaterextent 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, jiulonghe pianqiao hydropower station project is used as a research object.By means of software FLUENT, establishing numerical simulation region, using unstructuredgrids and implicit method and in addition, 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 stateof the flood sluice of pianqiao hydropower station is simulated with three-dimensionalnumerical model according to the steady flow. The conclusion shows that the calculationresults that the flood sluice discharge capacity, the water surface profile, the pressuredistribution and velocity distribution are in good compliance with the test measured data, so itshows that the adapted numerical simulation model in this paper is reasonable, and themethods is correct.