Question

What considerations are taken to consider the analysis of the boundary layer? Explain widely.

topic of mechanic of fluids.

Answer 1

For analysis of boundary layer we have to take following considerations.
(1) at y = 0 , du/dy 0
That means at y =0 or at the surface the velocity gradient must be non zero.
(2) at y = , du/dy = 0
That means velocity gradient becomes zero at boundary layer thickness
(3) at y = , u = U
at y = the velocity of the fluid becomes equal to the free stream velocity.
With the help of these three condition we can analyse a boundary layer problem.