Example Case 1 - Centrifugal Pump

 

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


case-1--centrifugal-pump-1

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)


case-1---centrifugal-pump-2

 

 

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


case-1---centrifugal-pump-3

 

Multi-point, Multi-objective Optimization Results

 

case-1---centrifugal-pump-4

 

Next: Example Case 2 - Axial Fan

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