In this study, it is aimed to increase the aerodynamic performance of a wind turbine blade by using the suction technique which is one of the active control methods of boundary layer flows based on the principle of air intake from the boundary layer into the blade. Suction is defined as a continuous jet and the S809 airfoil is preferred which is widely used in wind turbine applications as a blade model. Three different jet positions (Ljet = 0.1c, 0.26c, 0.36c) and three different jet ratios (Rjet = 0.1, 0.3, 0.5) are selected as study parameters. The suction jet width is fixed and is 2.5% of chord length and the suction jet angle (θjet) is 90° to the local jet surface. Numerical analysis for a two-dimensional turbulent flow is performed using SST k-ω turbulence model with an angle of attack of α =15° and Re=106. Firstly, the effect of the suction jet position is investigated and then the effect of the suction jet ratio is examined with an optimum suction jet position that showed the best result. When the simulation results of the flow around the airfoil are examined, the best result is obtained when the suction jet position is jet-3 (0.36c) and the suction jet ratio is 0.5. CL/CD ratio is increased from 17.92 to 273.03 compared to the no-jet situation. By the application of the suction jet control method, the CL is increased approximately from 1.211 to 1.8 and the CD is decreased from 0.068 to 0.0066 in comparison to the uncontrolled case.
: April 30, 2020
|APA||Çankaya, G , Erkan, O , Özkan, M . (2020). S809 Kanat Profili Etrafındaki Sınır Tabaka Akışının Emme Tekniği ile Aktif Kontrolünün Sayısal İncelenmesi . Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi , 7 (1) , 461-472 . DOI: 10.35193/bseufbd.729822|