Design Specifications

• Volume flow rate = 0.107 m3/s
• Shaft speed = 1000 RPM
• Stage Head = 16.7 m
• Number of Blades = 6 
• Outlet channel diameter = 482.4 mm

D Blade Parameterisation

• Leading edge loading at hub
• Leading edge loading at Shroud
• Slope of the hub loading distribution
• Slope of the shroud loading distribution
• Pump exducer width (M4)
  
  
  

 

 

Multi-point, Multi-objective Optimization

 

Operating Point	OP1	OP2	OP3
Mass flow % of Design Point	90.8	106.8	122.8
Impeller Head % of Design Point	106.6	91.7	77.2

 

Constraints	Objectives
Power at all operating operating points to be between 10 - 18 kW	Maximise Pmin  (blade minimum pressure - to control cavitation) Maximise OP2 impeller efficiency Maximise OP3 impeller efficiency

 

 

Fast, Affordable High-Fidelity Simulation, RRS with CAE

 

• Initial Design Matrix of 20
• RRS adds 15 points to the design space
• 35 candidates in total , 3 operating points
• 35 x 3  = 105 CFD calculations
• Total of 5 hours on 11 cores on Xeon workstation
  
  
  

 

Multi-point, Multi-objective Optimization Results

 

 

Next: Example Case 2 - Axial Fan