Why does sand go down/out while air pulls UP?
High-velocity air enters tangentially, forming an intense outer vortex. The resulting high centrifugal force ($F_c = \frac{m v_\theta^2}{r}$) flings dense sand grains outward to the chamber walls. Wall friction strips particle momentum, allowing gravity to drag the sand down into the bottom bin. Meanwhile, central low pressure creates a inner upward vortex carrying fine airborne dust up through the vortex finder pipe.
Status: High efficiency centrifugal separation achieved
G-Force: 14.2 G
Ejection: 45.2 g/s
Core Pressure: -120.5 Pa