Full Program »

NONLINEAR VORTEX STRUCTURES IN BOUNDARY LAYER FLOW

PDF
1.3MB

We report various nonlinear flow structures for a parallel boundary layer flow, some bifurcate directly from the linearly
unstable Blasius flow, others are obtained through an artificial body force F(y,z), of amplitude fA, using ideas from the self-sustaining
process (F. Waleffe. On a self-sustaining process in shear flows. Phys. Fluids 9, 883-900, 1997). The relevant solutions are found
by continuing the forced state and smoothly reducing the external force to achieve solutions of the unforced Navier-Stokes equations.

Author(s):

Hakan Wedin    
DICCA, University of Genova
Italy

Giuseppe Zampogna    
DICCA, University of Genova
Italy

Alessandro Bottaro    
DICCA, University of Genova
Italy