Studying flow over Taruc spillway by both turbulent and air entrainment modules of flow 3D

Abstract

Two turbulent flow and air entrainment modules of Flow 3D hydrodynamic model were used to simulate the flow through the hydraulic work included the spillway, the channel chute and the erosion tank of Ta Ruc - Khanh Hoa. The hydraulic characteristics of the flow such as water level, velocity are well matching with the measured data. Three alternatives of sneezing angle of channel chute’s toe of 10o , 20o and 30o are also considered to find out the optimal case based on the assessment of jet flow length, velocity, pressure distribution at erosion pit. The necessary of the air entrainment model combined with turbulent one in
simulating high flow velocity on complex hydraulic constructures was also confirmed.