Velocity Patterns & Jet Entrainment

McCabe & Smith (Chapter 9)
Tank + Impeller● Blue Particles
Click inside tank or move slider below
Figure 9.10 (Cutter)
0.00.20.40.60.81.01.21.40123456Tipq / qBVr / u2r (inches)
─ White: Flow Rate (q/qB)╌ Gray: Velocity (Vr/u2)
Radius r4.20 in
2.0 in (Tip)4.25 in (Peak Flow)5.75 in (Wall)
Radius4.20 in
Vr / u20.274
q / qB1.198
“See? Velocity is decreasing but flow rate is increasing because entrainment is occurring.”