Experimental and numerical study on the aerodynamics characteristics of an airfoil adjacent to a ground

The ground effect and aerodynamic characteristics of a two-dimension airfoil were investigated numerically by solving the N-S equation of steady incompressible flow and the standard S-A turbulence model.In order to verify the results of numerical simulation,a pressure measurement to a NACA0012 airfoil was carried out in a low speed wind tunnel in order to get the surface pressure distribution of the airfoil,and the experimental data are then compared with that from numerical simulation.The results show reliability of the numerical simulation.Then the aerodynamics characteristics of the airfoil close to ground are provided by calculation of NACA0012 for different incidence angles and clearances with fixed and moving bottom conditions,and the aerodynamic loads on the airfoil are discussed.