Laminar vs turbulent flow — click to inject dye, drag to stir
1.5
200
0.05
Re = 200 — Laminar
Reynolds Number (Re): ratio of inertial to viscous forces. Low Re = smooth laminar flow where dye stays in neat streaks. High Re (>~2300 for pipe flow) = turbulent, chaotic mixing. Click to inject dye at cursor; drag to add stirring velocity. Watch how the flow regime changes the mixing entirely.