The state and properties of boundary layer (BL ... e.g. by means of PIV or DNS. In many studies the role of these structures for the wall normal and spanwise fluid exchange has been highlighted mostly ...

So the bulk velocity of the fluid must change from whatever its value is far away from the wall to a value of zero at the wall (figure 7). This is called the no-slip condition. Figure 7. Velocity ...

Frictional drag comes from friction between the fluid and the surfaces over which it is flowing. This friction is associated with the development of boundary layers, and it scales with Reynolds number ...

Finally, there is the wake, where the boundary layer flow is least affected by the boundary, according to a formula by von Kármán. The fluid flows quicker farther from the boundary, but its ...