You are on the current version of the software, have you reported it to your reseller?
Firs thought is to check your inputs and your outputs. If you use parameters rather than goals, do you get the same values? What happens when you compare cut plots of velocity?
If you remove the changes , do you get the same output as before?
These are the types of things we would try on tech support.
If you can post the files, we'll have a better chance of solving the problem.
Theoretical calculations must leave the same results.
However, in the case of the simulation, the value of the result is different.
1 Inlet Lid-> Total pressure [Pa] Outlet Lid -> Mass Flow [kg / s]
Result = total Pressure & Static Pressure = geometric Zoom
2.Inlet Lid-> Mass Flow [kg / s] Outlet Lid -> Total pressure [Pa]
Result = total Pressure & Static Pressure = Normal
Please post your references/theoretical calculations if that is what you are comparing to. Please highlight how your simualtion setup matches them along with your assumptions for both.
That being said, in your first post you said everything stayed the same except for be impeller. In your latest, you say that you changed the boundary conditions. If you changed conditions, I would check they are the same at the end of the solution using goals or parameters. Your choices don't look equivalent to me.
Also, if you haven't done so, I would recommend looking at the rotation suggestions in the swx kb and solving engineering problems docs. Mass flow out is Generally not recommended.
Mass Flow Out is Generally not recommended. <- So Thank you, Sir.
Very Very Thank You.