A laminar boundary layer velocity profile is approximated by u / U = [ 2 − ( y / δ ) ] ( y / δ ) u/U=[2−(y/δ)](y/δ) for y ≤ δ y≤δ, and u = U u=U for y > δ y>δ. (a) Show that this parabolic profile satisfies the appropriate boundary conditions.
(b) Use the momentum integral equation to determine the boundary layer thickness, δ = δ ( x ) δ=δ(x). Compare the result with the exact Blasius solution.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.