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CRESCENT PUMP

Crescent Pump Design:

A Positive Displacement Pump (PDP) with one rotating gear set inside another, separated by a crescent shaped island .

Advantages:

Positive displacement, Good suction performance, Reduced pressure ripple.

Application:

Fluid transfer, hydraulics.

PumpLinx: Solve Flows, Pressures, Cavitation, and Loads:

Discriminators:

  • Able to handle complex “island” geometry
  • Models cavitation
  • Accurate tip leakage
  • Superior treatment of rotating-stationary interfaces
  • Ease-of-use
  • Fast turn-around

Design Issues/Benefits:

  • Gear Design
  • Island Design
  • Port design
  • Leakage reduction
  • Reduce Cavitation effects on efficiency and pump life
  • Reduce Pressure ripple and noise

 

EXAMPLE: Crescent Oil Pump
Optimization of an automotive transmission pump.




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