Abstract: “IIn the present study, a structure consisting of a nozzle, a diffuser and a flange was constructed and modeled using a 3-dimensional, 3D, model using ANSYS-FLUENT 6.3. The aim of this study is to get the results for an optimum geometric shape that generates the highest wind velocity in front of the wind turbine installed inside the structure at the position where the air velocity is maximum. In addition, another aim of the study is to compare the results of the 3D model in case of the presence of the wind turbine inside the flanged diffuser augmented wind turbine, FDAWT, structure with the case of empty structure (without the turbine). The obtained 3D model results for velocity and pressure distributions within the study domain are compared with the results obtained previously by the present authors using 2D model. The present 3D study reveals that: The maximum velocity along the structure centerline at the throat of the FDAWT structure is increased by 70% before inserting the turbine.”

Keywords: Wind turbine, flanged diffuser, 3D, CFD