[crixman]

Hi all,
I am trying to simulate the flow driven by an high-pressure industrial fan in a duct.

The ideal BCs would be:
-inlet:
p = 111325
U = 10
-outlet
p=101325
U = inletOutlet or similar (just to assure mass conservation

-walls:
p zeroGradient;
U fixedValue uniform (0 0 0 ).

I understood that it is not possible to set up these BCs in simpleFoam, so I am trying to use rhoSimpleFoam (see case in attachment).
I tried any possible combination of BCs my mind came up with but I could not get meaningful results, could anyone enlighten me on a proper setup?

[nimasam]

im not expert about compressible flow
but in incompressible flow when u set pressure, use pressureInletVelocity for velocity

[crixman]

thank you for the reply, in fact this works with incompressible but the same BCs do not work for compressible!
I don't know if it's the BCs or something related to numerical schemes!

Originally Posted by nimasam

im not expert about compressible flow
but in incompressible flow when u set pressure, use pressureInletVelocity for velocity