Design Optimization of a Centrifugal Compressor [Case Study]

Conceptual design of a centrifugal compressor R134a

• Software: CFturbo, integrated into Ansys Workbench
• One initial design + one manual design variation, “Design2”
• Mathematical optimization using CFturbo/Ansys Workbench/Design Explorer
  • 8 geometry parameters, 141 different designs in total
  • All design points meet the performance requirements at selected rpm
• Substantial stage efficiency improvement at design speed
  • Initial design: η=56%
  • Manual “Design2”: η= 59%
  • Optimized “Design107”: η= 73%
• Total project time: 10 days
• Next steps
  • Adjustments and fine-tuning, for example blade loading variation and volute parameters
  • 360° impeller model and transient simulations for final check of steady-state results

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