In this thesis the wind turbine NREL Phase IV is taken as an example for studying the steady-state fluid flow of horizontal axis wind turbines (HAWT) by means of computational fluid dynamics (CFD). For this purpose an in-house CFD-Solver (NS3D) based on the Reynolds Averaged Navier-Stokes equations (RANS) is used. Besides the simulation of fluid flow, topics like setup of geometry, grid generation, pre- and postprocessing are considered. In addition to visualisation and analysing of the fluid flow at a wind turbine blade the sensitivity of the fluid flow is shown by changing several model parameters. Therefore the two-dimensional flow at the wind turbine airfoil S809 and the three-dimensional flow at the wind turbine blade are investigated. The simulation results are compared to experimental data as well as to results from a commercial CFD solver. The application of a turbulence model according to Lien, Chen and Leschziner shows good results.
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In this thesis the wind turbine NREL Phase IV is taken as an example for studying the steady-state fluid flow of horizontal axis wind turbines (HAWT) by means of computational fluid dynamics (CFD). For this purpose an in-house CFD-Solver (NS3D) based on the Reynolds Averaged Navier-Stokes equations (RANS) is used. Besides the simulation of fluid flow, topics like setup of geometry, grid generation, pre- and postprocessing are considered. In addition to visualisation and analysing of the fluid fl...
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