[husker]

Hi all,

I am trying to build the performance curve of a centrifugal pump.
I do know the design point (mass flow rate and rpm).

However I need the performance curve (mass flow rate vs. head).
I tried the followings:

1) I set 40, 60, 80, 140, 160, 180 percent of design mass flow rate at the inlet and monitored the output pressure. Outlet BC was pressure outlet.

2) I tried fixing several head values by setting different pressure values at the inlet and outlet at a constant rpm. Inlet and outlet BCs are pressure outlet.

Finally I monitored pressures and velocities and none of my all simulations converged.

Any ideas about what is wrong? Or any recommendations about how to build the performance curve?

Regards