Closeup of a coherent structure in the turbulent boundary layer
On the left is a top view of the coherent structure. Careful examination reveals a streak of fluid directly underneath the arch shaped structure towards the bottom of the picture. This streak is shown clearly in the bottom view on the right. The full volume containing this structure can be seen in the previous stereogram, from various angles in the next stereogram, or you may return to the stereoscopic visualization menu.
