Improvement of Self-Starting Capabilities of Vertical Axis Wind Turbines with New Design of Turbine Blades

A lift-driven vertical axis wind turbine (VAWT) generates peak power when it is rotating at high tip-speed ratios (TSR), which time the blades encounter angles of attack (AOA) over a small range from zero to 30 degrees. However, its ability self-start dependent upon performance low TSRs, AOAs 180 novel vented aerofoil presented with intention improving VAWT TSRs without hampering TSRs. Computational fluid dynamics (CFD) simulation used predict aerodynamic characteristics new based on well documented NACA0012 profile. Simulations are performed using SST turbulence model. The results obtained show reduction in coefficient tangential force (the that torque turbine) (less than 90 degrees) no more 30%, while (more an improvement 100% observed. Using simple momentum prediction model, these suggest this would lead increase generation by theoretical three-bladed up 20% and minor 9% TSR 2 closer 1% higher