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2. Plane Couette flow

This snapshot shows an instant in the evolution of plane Couette flow in a rectangular cell of size [Lx, Ly, Lz] with solid walls on the top and bottom (y = -Ly/2 and Ly/2).
[movie of plane couette flow]

The [x,y,z] directions are refered to as streamwise, wall-normal and spanwise, respectively, with the three velocity components denoted by u(x,t) = [u,v,w](x,y,z,t) .