A useful approximation for the x component of velocity in an incompressible laminar boundary layer is a parabolic variation from u -0 at the surface (y 0) to the freestream velocity, U, at the edge of the boundary layer ( y = δ ). The equation for the profile is u/U-2(y/5) (y/5)2, where-cz1/2 and c is a constant.

Find the simplest expression for the normalized y component of the velocity (v/U) in terms ofx, δ, and y.

Evaluate the normalized y velocity (v/U) at the location where y/5-1, δ = 5 mm, and x = 0.5 m.

In a unit cell of fcc structure, indicate the position of one of the tetrahedral interstitial sites by plotting the corresponding tetrahedron. do the same for one of the octahedral interstitial sites (in a separate fcc unit cell). mark the positions of all the tetrahedral and octahedral interstitial sites in the unit cells. how many equivalent tetrahedral sites and how many equivalent octahedral sites are contained in a fcc unit cell, respectively. what is the coordination number for a tetrahedral site and what is the coordination number for an octahedral site?