Study on aerodynamic performance of inverted cone vertical axis wind turbine with different rotor configurations

Offshore wind resources are abundant. Vertical axis turbines (VAWTs) suitable for working in the sea environment because of their low cost and high reliability. In this paper, an offshore floating inverted cone vertical turbine (ICVAWT) is proposed. The 3D unsteady computational fluid dynamics (CFD) method utilized to model ICVAWT. turbulence SST k−ω used solve Navier–Stokes equation, setting parameters solver independent grid determined. scale experimental prototype designed using similarity theory tunnel experiment carried out. results verify validity CFD model. aerodynamic performance nine ICVAWT configurations analyzed by model, effects angle blade number on power coefficient operation stability studied. It found that when 45°, blades three (called optimal configuration), highest at 0.309 (the tip speed ratio 3.5). With increase number, fluctuation operating torque decreases. According distribution each physical quantity flow field, changes explained. Further research optimized configuration