naa a22 4500 510822088 CHVBK 20180411083538.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s12541-013-0139-2 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0139-2 Numerical investigation of active control for an S809 wind turbine airfoil [Elektronische Daten] [Tae-Jin Kang, Warn-Gyu Park] Recently, the necessity of using natural resources, like wind energy, has been greatly highlighted due to the limitation of fossil energy and the increase of environmental pollution. Therefore, many countries have begun their investigation in wind power generators. Also, National Institutes such as Riso (Denmark), ECN (Netherlands), and NREL (USA) have conducted many studies in this area. With the development of new design techniques, the size of wind turbines has been gradually increasing. So, the performance of wind turbines has become even more important. The flow control device is used for higher aerodynamic performance. In the present study, the aerodynamic performance of a wind turbine blade equipped with a flow control device is studied using a commercial flow analysis code, Ansys Fluent. The model used for calculation is an S809 airfoil that was tested in the low-turbulence wind tunnel of TU Delft. First, steady state results for the S809 airfoil, with change of angle of attack, are compared with experimental results. These steady state results show good agreement with the experimental results. Second, the computational results for the flow control device are presented for the aerodynamic performance of the S809 airfoil. When the position of the jet slot is x/c=0.6, computed results show a maximum lift coefficient of α = 14.24°. When the position of the jet slot is x/c = 0.025, computed results show a stall delay of α = 14.24° and 20.15°. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 S809 airfoil nationallicence Flow control device nationallicence Coanda jet nationallicence Lift to Drag ratio nationallicence Flow separation nationallicence Stall control nationallicence α : Angle of attack nationallicence α j : Jet angle nationallicence Re : Reynolds number nationallicence c : Chord length nationallicence h : Slot height nationallicence p0 : Total pressure nationallicence ps : Static pressure nationallicence Vj : Jet velocity nationallicence V∞ : Freestream velocity nationallicence CD : Drag coefficient nationallicence CL : Lift coefficient nationallicence L/D : Lift to Drag ratio nationallicence y+ : Dimensionless distance to the wall nationallicence Kang Tae-Jin School of Mechanical Engineering, Pusan National University, 609-735, Busan, Korea aut Park Warn-Gyu School of Mechanical Engineering, Pusan National University, 609-735, Busan, Korea aut International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/6(2013-06-01), 1037-1041 2234-7593 14:6<1037 2013 14 12541 https://doi.org/10.1007/s12541-013-0139-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0139-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kang Tae-Jin School of Mechanical Engineering, Pusan National University, 609-735, Busan, Korea aut NATIONALLICENCE 700 1- Park Warn-Gyu School of Mechanical Engineering, Pusan National University, 609-735, Busan, Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Korean Society for Precision Engineering 14/6(2013-06-01), 1037-1041 2234-7593 14:6<1037 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer