I am trying to model a prop as an actuator/momentum disk. I have tried the momentum source option but couldn’t get it to work so instead have a mass flow inlet and outlet over a disk which seems to be working fine. However, my boundary inlet and outlet when set to a velocity inlet and pressure outlet causes the flow to travel at 10,000s m/s which is ridiculous. In addition, when I set both to velocity inlet/outlet I get flow values of 10s m/s which is realistic for the prop I am simulating but. The flow never travels through the boundary it just recirculates as if the inlet and outlet are walls.
In addition I can’t seem to get flow lines to work either so I can also see what is going on by using a vector field which isn’t great either .
Any help with any of these problems would be massively appreciated.