Print Email Facebook Twitter Estimation of blade loads for a variable pitch vertical axis wind turbine from particle image velocimetry Title Estimation of blade loads for a variable pitch vertical axis wind turbine from particle image velocimetry Author LeBlanc, B.P. (TU Delft Wind Energy) Ferreira, Carlos (TU Delft Wind Energy) Date 2021 Abstract 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 and circulation control. Particle Image Velocimetry is used to capture flow fields at six azimuthal positions of the blades during operation, three upwind and three downwind. Flow phenomena such as dynamic stall and tower shadow are captured in the flow fields. The phase-averaged velocity fields and their time and spatial derivatives are used to calculate the normal and tangential loading at each position for each pitching configuration using the Noca formulation of the flux equations. The results show the effect of load shifting from the upwind to downwind region of the actuator using pitch and the effects of dynamic stall on the blades. The results also provide an unique database for model validation. Subject active pitch controlcirculation controlDarrieus VAWTflow visualizationparticle image velocimetryvertical axis wind turbineOA-Fund TU Delft To reference this document use: http://resolver.tudelft.nl/uuid:938f9f4a-8479-4617-86ac-fdd3d7d80d7b DOI https://doi.org/10.1002/we.2674 ISSN 1095-4244 Source Wind Energy, 25 (2), 313-332 Part of collection Institutional Repository Document type journal article Rights © 2021 B.P. LeBlanc, Carlos Ferreira Files PDF we.2674.pdf 8.15 MB Close viewer /islandora/object/uuid:938f9f4a-8479-4617-86ac-fdd3d7d80d7b/datastream/OBJ/view