Viscous flow: laminar and turbulent

Fluid Mechanics · Engineering

Interactive 3D

Narrow the pipe and the flow speeds up while pressure drops — Bernoulli in action.

Drag the sliders or type a value — the simulation updates live.

Throat size×

0.3×1×

Flow speed×

0.5×3×

Honey: laminar; river: turbulent. Re<2300 laminar pipe. Turbulent: more drag/mixing. Viscosity resists.