A flat plate has Cd = 1.28, a wedge shaped prism with the wedge facing downstream has Cd = 1.14, a sphere has a Cd that varies from .07 to .5, a bullet Cd = .295, and a typical airfoil Cd = .045. The drag force is calculated from F = ρ*V^2*A*Cd/2 Where ρ is the air density, V is the wind velocity, A is the area, and Cd is the drag constant. Cx Simulations 390 views. The drag equation given above was then used to calculate the drag coefficient. Flat Plate Boundary Layer: Calculate Drag Coefficient - Duration: 6:48.

The projected frontal area of each object was used as the reference area. F d = drag force (N) c d = drag coefficient. For a thin flat plate at a low angle of attack the lift coefficient Clo is equal to 2.0 times pi (3.14159) times the angle a expressed in radians (180 degrees equals pi radians): Clo = 2 * pi * a The drag coefficient Cdo is equal to 1.28 times times the trigonometric sine, sin, …
The flat plate is going to do a rather lousy job redirecting the air flow and will experience a large drag. Drag coefficient as a function of Froude number and hull characteristics for that portion of the ρ = density of fluid (1.2 kg/m 3 for air at NTP) v = flow velocity (m/s) A = characteristic frontal area of the body (m 2) The drag coefficient is a function of several parameters like shape of the body, Reynolds Number for the flow, Froude number, Mach Number and Roughness of the Surface. The sphere will do a good deal better than a flat plate and suffer less drag. Consider the drag on a flat plate, a sphere, and a nicely shaped airfoil, all with the same cross sectional area. Drag Force and Terminal Speed - Physics - Duration: 8:34. patrickJMT 9,024 views. Friction drag coefficient for steady, constant property, 2-D, uniform flow over a flat plate: ... Two objects of considerably different size that have the same drag force.

I'm trying to calculate the aerodynamic forces on a flat plate as a function of angle of attack.