Q. Consider steady laminar constant Property Flow in a duct formed by two parallel planes. Let the Velocity be uniform at the duct entrance. Calculate the development of the velocity profile in the entry length using the momentum integral equation, and an assumption the velocity Profile may be approximated by a constant velocity segment across the center Portion of the duct by simple parabolas in the growing boundary layer adjacent to the walls, the mean velocity is constant. Evaluate the hydrodynamic entry Lengh and compare with equation X = Re 2 D 20