I asked this questions a few backs and got good feedback on how to set the problem up. I believe I did what I was informed to do but I am unsure.
I have a manifold design for my thesis and I am trying to simulate a vacuum drawing up through up from 16 nozzles to pick up small objects.
I was told to place the design is a small box and apply a 1atm pressure to the walls and leave the base pressure free.
I then applied a outlet volume flow rate to the outlet which will be attached to the vacuum pump.
There is no movement in the flow trajectories and the velocity is zero?