Two-Dimensional Airfoil Characteristics under ground effect in Subsonic Turbulent Flow Regimes

아음속 난류 유동 영역에서 지면 효과를 갖는 2차원 에어포일의 특성

A two-dimensional airfoil under ground effect in subsonic turbulent flow is calculated by sieving the Navier-Stokes equation. Some numerical results for different NACA four-digit airfoils are presented. The numerical results show that the lift and drag coefficients are strongly influenced by the shape of the region between the lower surface of airfoil and the ground In general, the airfoil with large camber and small thickness is suitable for WIG vehicles