Breakdown of boundary layers: (I) on moving surfaces; (II) in semisimilar unsteady flow; (III) in fully unsteady flow
Abstract
Boundary layer breakdown and separation or reattachment are studied for the cases of moving surfaces, semisimilar unsteady flow, and fully unsteady flow. While in the moving surface case the classical steady boundary layer generally admits a logarithmic singularity in the displacement, when breakdown occurs on a downstreammoving surface, the corresponding singularity for an upstreammoving surface can be either logarithmic or of 1/6th form. In certain flows these singularities are locally removable, yielding a breakaway separation or reattachment. Other flows, by contrast, require an interactive strategy.
 Publication:

Geophysical and Astrophysical Fluid Dynamics
 Pub Date:
 August 1983
 DOI:
 10.1080/03091928308221749
 Bibcode:
 1983GApFD..25...77E
 Keywords:

 Boundary Layer Separation;
 Boundary Layer Stability;
 Reattached Flow;
 Unsteady Flow;
 Computational Fluid Dynamics;
 Inviscid Flow;
 Laminar Boundary Layer;
 Pressure Gradients;
 Singularity (Mathematics);
 Fluid Mechanics and Heat Transfer