Fabian Waleffe: dynamics from a lower branch in plane Couette flow

Isosurfaces of streamwise velocity u = 0 (green) and Q = Δp/2 at 0.6*max(Q) (red). The red isosurfaces attempt to visualize vortices in the flow.

This is for Plane Couette flow at R=1000, (a,g)=(1.14,2.5).

Top wall at y=1 moves at velocity 1 in the x direction, bottom wall at y=-1 moves at -1 in the x direction. Periodic in x and z.

to laminar flow t = 300-500

to turbulence t = 200-400