Total skin-friction drag on a plate refers to the cumulative aerodynamic drag force that arises due to the frictional resistance between the fluid flow and the surface of the plate. This drag force results from the shear stresses between the moving fluid layers and the plate’s surface and contributes to the overall resistance encountered by the plate as it moves through the fluid.Â
- Df: Total skin-friction drag on the plate
- q∞: Dynamic pressure of the freestream flow
- x1: Characteristic length of region 1
- (Cf,1)laminar: Skin-friction drag coefficient under laminar flow conditions in region 1
- c: Chord length of the plate
- (Cf,c)turbulent: Skin-friction drag coefficient under turbulent flow conditions in chord length c (typically over the entire chord length)
- (Cf,1)turbulent: Skin-friction drag coefficient under turbulent flow conditions in region 1