Print Email Facebook Twitter Wind Gust Generation for Wind Turbine Testing via Numerical Methods Title Wind Gust Generation for Wind Turbine Testing via Numerical Methods Author Kassem, Ahmed Valentin (TU Delft Aerospace Engineering) Contributor Ferreira, Carlos (mentor) Viré, Axelle (graduation committee) Degree granting institution Delft University of Technology Programme Aerospace Engineering Date 2019-11-29 Abstract The modelling of gust generation by an array of oscillating vanes at Delft's University of Technology Open Jet Facility is proposed. Focus is placed on identifying relevant in-field gusts that horizontal axis wind turbines are exposed to and reproduction via numerical methods in the wind tunnel setting. A computationally efficient model is developed based on potential flow theory. The model validation showed good results overall, preserving general trends. Several vane configurations are proposed. Veer profiles representative of all atmospheric stability conditions are simulated as well as a maximum profile with veer angle difference between the top and bottom of the rotor of up to 20°. A coupling between the trailing vorticity of the vanes and achieved veer profile is identified. Temporal variation of the streamwise velocity component is achieved, however, not following the intended gust profile. Peak to trough velocity variation of up to 28% of the free stream value is observed. Furthermore, gust length scale was linked to vane spacing, limiting the possibility of small geometric scale testing. Subject wind gust generationpotential theoryfree wakewind turbine testing To reference this document use: http://resolver.tudelft.nl/uuid:38f8aab2-cfed-4568-97da-f3677f777fe8 Part of collection Student theses Document type master thesis Rights © 2019 Ahmed Valentin Kassem Files PDF A.V.Kassem_2019_Wind_Gust ... ethods.pdf 18.78 MB Close viewer /islandora/object/uuid:38f8aab2-cfed-4568-97da-f3677f777fe8/datastream/OBJ/view