Estimation of blade loads for a variable pitch vertical axis wind turbine from particle image velocimetry

This paper presents the flow fields and aerodynamic loading of a two bladed H-type vertical axis wind turbine with active variable pitch for load circulation control. Particle Image Velocimetry is used to capture at six azimuthal positions blades during operation, three upwind downwind. Flow phenomena such as dynamic stall tower shadow are captured in fields. The phase-averaged velocity their time spatial derivatives calculate normal tangential each position pitching configuration using Noca formulation flux equations. results show effect shifting from downwind region actuator effects on blades. also provide an unique database model validation.