Also, potential flow theory cannot be applied for viscous internal flows.

The individual polymer chains tend to align in the fiber because of viscous flow.

It is used as a mechanism to explain the viscous flow in an amorphous polymer.

This viscous flow is at least 50 m thick, thus leaving an irregularity in the profile of the volcano.

Drag depends on the thickness and requires an understanding of viscous flow, which was beyond contemporary capabilities.

It is this viscous flow that causes the ripples to expand away from the point of impact.

During this process, the individual polymer chains tend to somewhat align because of viscous flow.

This is opposed to viscous flow encountered at higher pressures.

The various effects of disturbance on a viscous flow are stable, transition and unstable.

Consider the case of an airfoil accelerating from rest in a viscous flow.