Hi everyone,

I am currently trying to model a centrifugal pump with a rotating impeller using a steady state MRF region but seem to keep getting reversed flow/nonconvergence. The fluid is solely driven by the impeller (i.e. no inlet velocity).  Here is a link to my old post that has more details about my project: https://studentcommunity.ansys.com/thread/ansys-turbulent-flow-centrifugal-pump-non-convergence-and-floating-point-error/

Here are my settings:

Pressure based, steady

liquid: water

2 pressure outlets: 0 atm

1 pressure inlet: 0 atm

MRF (rotating region): speed 200 rpm

(I also checked the axis of rotation and I believe it is correct)