Study on Flow Field of Bulb Turbine Runner

The three-dimensional model based on the theory of runner blade annular cascade.The runner blade of the three-dimensional steady turbulent flow is simulated by using FLUENT software. It is near the pressure distribution of import and export of blade surface pres-sure contours velocity vector and the blade and the estimation of the water turbine hydraulic efficiency. The results show that the establish-ment of the annular cascade theory of cross flow with the feasibility of turbine blade.