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Centrifugal pump cavitation

- July 18, 2022 at 4:15 pm
  
  Jacob.bia3
  Subscriber
  
  Good evening
  I'm doing a centrifugal pump cavitation on cfx server but i'm struggling to determine the boundary conditions for the cavitation case( i want to plot cavitation number with head).I have tried to run it with these boundary conditions:
  Case 1:
  Inlet: mass flow 5 kg/s.
  Outlet: static pressure 300000 pa.
  Case 2:
  Inlet: mass flow 5.
  Outlet: static pressure 1 atm.
  The head in case 2 is bigger than case 1 which is not reasonable because cavitation number decreases.
- July 18, 2022 at 5:49 pm
  
  Jacob.bia3
  Subscriber
- July 19, 2022 at 2:57 pm
  
  sam
  Subscriber
  
  Good morning, Jacob,
  Can you share your mesh setup if possible?
  For the boundary, the inlet should be your massflow and the outlet pressure gauge should be 0 psi. If you have pressure at the outlet, then cavitation is expected to happen

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