Print Email Facebook Twitter An extended actuator cylinder model Title An extended actuator cylinder model: Actuator-in-actuator cylinder (AC-squared) model Author De Tavernier, D. (TU Delft Wind Energy) Ferreira, Carlos (TU Delft Wind Energy) Date 2019-08-01 Abstract In this paper, the actuator-in-actuator cylinder (AC-squared) model is presented. This model is an extension of the original actuator cylinder model of Madsen and is capable of modelling the effect of a two concentric actuation surfaces in 2D. The induced velocity at every point in the 2D field is affected by the force field acting on the two actuator cylinders. The equations are derived, and a model verification is performed using analytical solutions of flows, proof of flow equivalence, and using OpenFOAM calculations. Finally, the model is applied to different case studies, and the results are compared with a time-dependent free wake vortex method. Subject actuator cylinderdouble actuatorVAWTvertical axis wind turbine To reference this document use: http://resolver.tudelft.nl/uuid:95e3c4b4-8070-4dee-b4f8-9413ebd38e59 DOI https://doi.org/10.1002/we.2340 ISSN 1095-4244 Source Wind Energy, 22 (8), 1058-1070 Part of collection Institutional Repository Document type journal article Rights © 2019 D. De Tavernier, Carlos Ferreira Files PDF Tavernier_et_al_2019_Wind ... Energy.pdf 2.34 MB Close viewer /islandora/object/uuid:95e3c4b4-8070-4dee-b4f8-9413ebd38e59/datastream/OBJ/view