The ratio of lift coefficient to drag coefficient in airfoils is within the effective parameters in airfoil aerodynamic performance and also in manufactured machines based upon an airfoil like wind turbine. In the present study, the new aerodynamic geometry has been defined based on the theory of objects with moving surfaces, which is also applicable in the design of blade section in Magnus wind turbines. The introduced geometry is based on Treadmill geometry, but its initial circle diameter is greater than that of the end, and it is called as Treadmill airfoil. In this work, these two similar geometries with different dimensions were placed against to the free stream with low speed. Then, by inducing a tangential velocity on the surface, its effect on lift coefficient and drag coefficient was investigated using ANSYS CFX software. The effect of tangential velocity on the surface was studied in different velocities and angles of attack to compare with a stationary surface mode. The results show that the lift and drag coefficients and their ratio are greatly changed by surface tangential velocity. According to the surface tangential motion, the maximum ratio of lift to drag coefficient for the geometries number 1 and 2 are related to the angle of attack of 0 and 5 degree; with value of 130 and 56, respectively. Moreover, the maximum ratio of lift to drag coefficient for geometry number 1 in angles of attack 5, 10 , and15 are 81, 90, and 57 respectively. In addition the maximum ratio of lift to drag coefficient for geometry number 2 in angles of attack 0, 10 , and15 degree are 52, 49, and 45 respectively. It should be noted that the numerical method was applied to the geometry (1) by a tangential motion of a section of the surface, which its result showed that besides an increase in lift coefficient, the drag coefficient quantity will be negative. In result, a great ratio of lift coefficient to drag coefficient is achieved. It is worth mentioning that the consumption power required to generate the tangential movement along the surface has a very low value. In the other step, the laboratory model of Treadmill geometry and experimental setup were designed and manufactured. Then the model was positioned in the wind tunnel and qualitative and quantitative effect of tangential velocity on flow around geometry was investigated. In the qualitative study, the positions of the sepration and stagnation points were specified which these results are also so well and well matching the numerical solution. In the quantitative study, the lift and drag coefficients of tredmill airfoil were measured dimensionless tangential velocity up to 1 and the attack angles in 0, 5 and 10 degrees using loadcell and side force method. As a result, the surface tangential velocity leads to increase in lift coefficient and lift to drag ratio. Finally, the difference between the values of numerical solution and experimental investigation are acceptable which represents the validity of numerical solution. Keywords: Magnus Effect, Wind Turbine, Moving Surface, Airfoil, Wind Tunnel.