Dear.

Reference SPEC.

Volume Flow : 0.75 [m3/s]

Static Pressure : 2548 [Pa]

R.P.M : 3500 [rpm]

Inlet Lid : Volume Flow : 0.75 [m3/s]

Outlet Lid : Environment Pressure : 101325 [pa]

Results of Simulation

Volume FLow : 0.75 [m3/s]

Static Pressure : 726 [Pa]

actual results

Volume Flow : 0.75 [m3/s]

Static Pressure : 2548 [Pa]

!!!! triplication difference occurs , Static Pressure !!!!

Why?  Do you have I missed ?

Teach to me Please...