I am new to CFD modelling. I tried to simulate the flow of the rotating disk with an inlet flow and an outlet pressure (please refer to the sectioned view of the model below). However, the outlet flow rate is different from the inlet flow rate. I just wonder is that related to my setup.
Analysis: Internal , exclude cavities without flow condition
Gravity: Y component (-9.81 m/s^2)
Rotation: local region
local rotating region- 219.94 rad/s
Real Wall - Stator
Inlet volume flow- 0.033 m^3/s , uniform, absolute
Environment pressure outlet
The diameter of inlet is 40 mm and outlet is 50 mm.