In fluid dynamics, the no-slip condition for viscous fluids states that at a solid boundary, the fluid will have zero velocity relative to the boundary.

As with most engineering approximations, the no-slip condition does not always hold in reality.

The no-slip condition poses a problem in viscous flow theory at contact lines: places where an interface between two fluids meets a solid boundary.

Wind speed increases with increasing height above the ground, starting from zero due to the no-slip condition.

Petrie also showed that the rates were largely unaffected by replacing the disk with a ring, and that the no-slip condition was satisfied for angles greater than 10 .

The air molecules at the surface of a wing are effectively stationary (see the no-slip condition).

Close to a boundary, the fluid velocity goes to zero, even for very small viscosity (the no-slip condition).

This is called the no-slip condition.

The angular acceleration of the pulley is given by the no-slip condition:

In case of theoretical flow profile, say a uniform velocity flow profile where the no-slip condition on the pipe walls is not applied, Fig.