S051011 Development of Axial Flow Hydraulic Turbine with Collection Device

Abstract

We investigate numerically the dynamical behavior of an axial flow hydraulic turbine model with a collection device in an open channel. To study the effect of the collection device, we first introduce a model impeller and investigate its performance and flow field. We then explore the performance and flow field of the collection device, and the impeller with the collection device. We find the introduction of the collection device accelerates and enhances the velocity of collective flow. Finally, to confirm the effectiveness of the simulations, a real scale model is developed and tested in a river. We obtain reasonable agreement between the numerical calculations and experiment.