Özet:

In this study, one of the active control methods of the border layer flow, the absorption technique based on the principle of air absorption from the border layer into the wing, a wind turbine aimed at improving the aerodynamic performance of the wing. The absorption process was carried out through a permanent jet, the S809 wing profile was preferred, which is widely used in wind turbine applications as a wing model. As working parameters, three separate jet positions (Ljet = 0.1c, 0.26c, 0.36c) and three separate jet ratio (Rjet = 0.1, 0.3, 0.5) are selected. The absorption jet width is fixed to up to 2.5 % of the veter length and the absorption jet angle (θjet) is set to be 90° to the regional jet surface. Numerical analysis for two-dimensional turbulent flow was carried out using the α = 15° attack angle and the SST k-ω turbulent model at Re = 106. First the impact of the empty jet position, then the impact of the empty jet rate was studied by choosing the empty jet position that gave the best result. When the simulation results of the flow around the wing profile were studied, the best result was taken when the absorption jet position was 0.36c (Jet-3) and the absorption jet ratio was 0.5 . The ratio of CL/CD has risen from 17.92 to 273.03. With the application of the control method with the absorption jet, the value of Cl increased from approximately 1.211 to 1.8, while the value of Cd fell from 0.068 to 0.0066.

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