Análise em CFD do escoamento de ar sobre as pás de uma turbina eólica de eixo horizontal

Abstract

The improvement of fluidynamics equipment has become one of the main goals of engineering in the last years. For the improvement of these equipment, engineers from different fields have performed two distinct approach: experimental tests and computational simulation. In the scope of computational thecniques, it can be highlighted the tool Ansys Student Fluent which solve fluid flow problems through Computational Fluid Dynamics (CFD). The present study shows a aerodynamics profile analisys of flow through wind turbine General Eletric 􀂱 GE 1.5 Xle. The simulation has built considering wind free stream velocity of 12m/s. The turbulence scales over the flow were solve though the model k-omega SST (Shear Stress Transport). The results obtained were validated by means of analytical solutions for the parameters of the blade tip speed and the power coefficient. The average error presented for the blade tip speed values was 0.0001%. The torque values obtained through of simulation for the highest level of mesh refinement, result in a value in the power coefficient close to that established by the manufacturer, in the amount of 26.7%, which represents an approximate error of 11%.