[robinfisichella]

I'm confused, ive just been reading a technical SAE paper which states

Cx = Cs + Ci + Cf

where Cs = shape drag coefficent (Technical paper description, i assume it means pressure drag)

Ci = induced drag coefficent

Cf = skin friction coefficent

I assume that Cx = Cd in the x direction

Is this true? I think i have been told in the past that Cd = Cf+Cs (pressure and friction components).

In Starccm+ you can split the recorded Cd coeficent into pressure and shear components, but there is no mention of induced drag.