University of Twente Student Theses


3D Simulation of a wind turbine rotor in axial inflow conditions

Maat, Daniëlle (2023) 3D Simulation of a wind turbine rotor in axial inflow conditions.

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Abstract:Wind turbine aerodynamics and rotor modelling are associated with several uncertainties. Computational Fluid Dynamics (CFD) is a tool to provide a more accurate analysis. In this study, the ability of a pressure-based solver in SU2 to simulate the flow over a wind turbine rotor is investigated. Based on simulation of two-dimensional (2D) flow problems, it is found that the pressure-based solver captures the turbulent boundary layer, flow reversal and reattachment after separation and the flow over an airfoil. The MEXICO and DanAero rotor are modelled in axial inflow conditions. The pressure on the blades, the normal and tangential loads and the velocity around the rotor and in the near-wake are compared against experimental data. Observed differences are generally similar to differences between experimental data and other studies numerical results. Pressure levels are somewhat overpredicted on the suction side. The pressure-based solver predicts unphysical wiggles in the skin friction coefficient. The study of the MEXICO rotor shows that the velocity field in the vicinity of the tip and root vortices is difficult to predict. Numerical issues are observed while modelling the MEXICO rotor in the turbulent wake state and the DanAero rotor on a rectangular mesh.
Item Type:Essay (Master)
Faculty:ET: Engineering Technology
Subject:52 mechanical engineering
Programme:Mechanical Engineering MSc (60439)
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