There are two main types of fluid flow - laminar flow, in which the fluid flows smoothly in layers, and turbulent flow, which is characterised by chaotic motion and large amounts of mixing.

and the time-averaged velocity profile in a turbulent flow is much more uniform than in a laminar flow (see figure 4). As a result of this mixing, the velocity gradient at the wall is higher than that ...

Laminar flow is the quality of a liquid having layers flowing past one another with little or no mixing. One way to do this is to force liquid through individual, parallel channels as it ...