[VentinS]

Dear Foamers!


I started with a simulation of a simple 3D channel with interFoam, I never worked with this solver and I'm pretty confused.


The geometry is something like this:
_____________________________

Inlet(water) ->| air | Outlet

---------------------------------------------------
My idea was:
outlet p: fixedValue; uniform 0; it worked well with simpleFoam,

inlet U: flowRateInletVelocity; with volumetricFlowRate (this works fine)
walls with noSlip (The picture is misleading, it is from my first try where the walls U were: fixedValue; value uniform (0 0 0); )
and the alphaWater seems to rise, which is nice

My questions are:

how do I define this free stream condition, for the pressure?
and why is the velocity zero behind the flow?


Thanks in advance!

[VentinS]

OK, I think I got it, so maybe for someone with a similar problem:


The pressure on the outlet works fine (at least for me) with:
type fixedValue;
value uniform 0;


The velocity is NOT zero!
With hover cells on, it shows the correct velocity.


And note to self, the pressure is already in Pa