Three Dimensional Analysis of Hydrofoil Slat Arrangements for Hydro-kinetic Turbine Applications
Operational effectiveness of the wind and hydrokinetic turbines depend on the performance of the airfoils chosen. Standard airfoils historically used for wind and hydrokinetic turbines had and have the maximum lift coefficients of about 1.3 at the stall angle of attack, which is about 12o. At these conditions, the minimum flow velocities to generate electric power are about 7 m/s and 3 m/s for wind turbine and hydrokinetic turbine, respectively. Using leading edge slat, the fluid dynamics governing the flow field eliminates the separation bubble by the injection of the high momentum fluid through the slat over the main airfoil- by meaning of the flow control delays the stall up to an angle of attack of 20o, with a maximum lift coefficient of 2.2. In this study, NACA 2415 was chosen as a representative of hydrofoils while NACA 22 and NACA 97 , were chosen as slat profiles, respectively .This flow has been 3 dimesionally simulated by FLUENT , employing the Realizable k-E turbulence model. In the design of the wind and hydrokinetic turbines, the performance of the airfoils presented by aerodynamics CL = f ( , ), CD = f ( , ) and CL/CD = f ( , ) are the basic parameters.
Tahir YAVUZ Hursit AKPINAR
Baskent University, Department of Mechanical Engineering,Ankara, TURKEY
国际会议
大连
英文
106-108
2012-05-28（万方平台首次上网日期，不代表论文的发表时间）