Laminar flow

[1] At low velocities, the fluid tends to flow without lateral mixing, and adjacent layers slide past one another smoothly.

The threshold velocity is determined by a dimensionless parameter characterizing the flow called the Reynolds number, which also depends on the viscosity and density of the fluid and dimensions of the channel.

In that case, the velocity of flow varies from zero at the walls to a maximum along the cross-sectional centre of the vessel.

As the wing moves forward through the air, the boundary layer at first flows smoothly over the streamlined shape of the airfoil.

Laminar airflow is used to separate volumes of air, or prevent airborne contaminants from entering an area.

Laminar flow hoods are used to exclude contaminants from sensitive processes in science, electronics and medicine.

A laminar flow design for animal husbandry of rats for disease management was developed by Beall et al. 1971 and became a standard around the world[9] including in the then-Eastern Bloc.

The velocity profile associated with laminar flow resembles a deck of playing cards . This flow profile of a fluid in a pipe shows the fluid acting in layers that slide over one another.
A sphere in Stokes flow, at very low Reynolds number . An object moving through a fluid experiences a drag force in the direction opposite to its motion.
In the case of a moving plate in a liquid, it is found that there is a layer (lamina) that moves with the plate, and a layer of stationary liquid next to any stationary plate.
Experimental chamber for studying chemotaxis in response to laminar flow