A recent post (Simulation of an Actuator Disk) [Simulation of an Actuator Disk] demonstrated how fluid momentum could be added to flow using a disc. However, this was a solid disc which would not work for a ventilation fan that spans the width of the flow channel (duct) and is the only momentum source in the system.
Would it be possible to use a porous disk? [Ref: https://www.simscale.com/projects/ROHIT_SR/porous/]. With a sufficiently high porosity, the pressure drop could be low and the momentum could still be added to the disk’s surface. Ideally this would induce negative pressure upstream and positive pressure downstream as it should in momentum theory [https://en.wikipedia.org/wiki/Momentum_theory].
Has anyone done this, or know if this would work? Or is there another approach?
Thanks everyone for your help!