Please draw and explain it. Thank you!
Please draw the flow pattern for the following three impellers for configurations A to D (12 figures in total):
1. Hydrofoil Impeller - axial flow impeller
2. 45ΓΒ° Pitched Bladed Turbine (PBT) - mixed flow impeller
3. Flat Bladed Turbine (FBT) - Radial Flow Impeller
A - High Impeller Clearance
B - Low Impeller Clearance
C - Large Diameter Impeller
D - Small Diameter Impeller