Lectures 11: High Reynolds number flow: the boundary layer.

The limit of Navier-Stokes flows for large Reynolds number. Prandtl's boundary-layer scaling. The Blasius problem; Weyl's method. The drag on a flat plate. Boundary layers as singular perturbations. General bodies. Displacement effect. The 2D jet from a wall. Falkner -Skan solutions. Separation.

Suggested reading:

• Batchelor 302-321
• Milne-Thomson sec. 19.81
• Landau & Lifshitz sec. 39