I am a student from Xian China，
This is the rotating disc,you can see it has bars and grooves.
Two discs are face to face,the rotating disc is 105 rad/s and the static disc do not move.
Well,this is the boundary conditions.(I used the Global rotation in the guide.)
(Inlet is water,out let atmosphere , volume rate of flow 0.01m^3/s ,set the s.tatic disc as a real wall and stator)(so quesiton number 1:should i choose all the surface of the static disc that inculding the bars surface as real wall and stators?)
other settings are seted as default.
This is the real wall i selected(without slect the surface of the bars)
RESULTS:(AFTER 1.5 Hrs)
Flow traces(shows speed of the flow wich is not bad,basically correct);
But i am not sure ,anyone who knows about how fluid machinery be simulated in the Flow simulation helps me dealing with the problem?