Boundary layer

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How does the no slip condition affect the fluid close to a wall ?

How do you think the noslip condition will affect the layer of fluid closest to the wall and the layer after that? This movie lets you see what happens to the layers of fluid
So we have seen that:
  • fluids can flow rapidly over bodies (think back to the fast car)
  • fluids stick to solid surfaces (think back to the intermolecular forces)
  • The region where the flow changes from the freestream to zero velocity at the wall is called the Boundary Layer.
Boundary layers were first postulated by Prandtl in 1904. The boundary layer can be seen in this picture of flow over a flat plate.