All labsStart this quest
Physics ~4 minNavier–Stokes, viscosity, pressure gradient
Why channel flow is fastest in the middle
Push water through a channel and see the speed profile bend.
Physics · ~4 min · live model
Loading the lab…
Make a prediction, then push the model. What you discover is recorded here.
The idea behind this lab (open after you’ve tried it)
Viscosity drags the fluid to zero at the walls, so a pressure drop produces a parabolic profile that peaks in the centre.
Go deeper than one lab.
A full quest builds the idea step by step, with checks and a new case to apply it to.