fluid

Ex. 1 150 Velocity profiles are measured at the upstream end and at the downstream end of a control volume as shown in H Figure. The maximum velocity at the inlet and at the outlet is the same V.Vax. 3m/s. The velocity profile at the inlet is uniform, while the velocity profile at the outlet is linear as shown in figure. If the fluid is air, with p-1.22 Kg/m' and H-Im. calculate the drag per unit length on the wall