Hydrodynamic Analysis of Tidal Current Turbine under Water-Sediment Conditions

The rivers connecting oceans generally carry sediment due to water and soil losses in China. Additionally, the maximum concentration is 300 g/L, which much higher than that of other countries. It unknown whether seawater with sand particles will affect power tidal current turbine blades. therefore necessary study capture turbines water-sediment environment. In this study, blade was divided into a number transversal airfoil elements based on element theory. CFD-DPM model employed lift drag coefficients under multiphase flow, fluid–particle interaction considered. accuracy presented assessed using experimental data 120 kW Good agreement between predictions observed. effect particle properties coefficient were investigated detail. Furthermore, calculated Blade Element Momentum theory different concentrations. results show small diameter can improve large reduce power.