Multi-Objective Optimization of a Centrifugal Pump Stage

Our client of a large global pump manufacturer provides a full range of pump series for a variety of applications.

They have been using TURBOdesign1 in their design system and have collaborated with ADT on several projects. In this project, ADT were tasked to perform a multi-objective design optimization of a pump stage as shown in Fig. 1. The aim was to identify the most important geometrical and blade loading parameters that affect the pump performance with regards to hydraulic efficiency, cavitation, shut-off and stall characteristics.

Project details

Design Targets

• Improve the impeller suction performance at design point.
• Improve the stall performance.
• Maximise pump head at shut-down.

Deliverables

• Design guideline based on sensitivity analysis for impeller design.
• Optimised impeller geometries for different objectives.

Impact

• General applicable design guidelines for multi-point / multi-objective design of centrifugal pumps.
  
  

The results show significant improvement in suction performance which is obtained by following the design guidelines of the DOE study for the ADT baseline design.