Brazil Nut Effect — Granular Segregation

Large particles rise under vibration despite higher mass | Γ = Aω²/g | Convection-driven segregation

Vibration Γ = Aω²/g 3.0

Frequency ω (rad/s) 10

Large:Small ratio 3.0

Large CoM height —

Small CoM height —

Segregation index —

Shakes 0

Orange=large (heavy)
Blue=small (light)
Mechanism: void filling + convection