[framungom1]

Dear Community,



I am trying to study the experiments shown in the attached screenshot using CFD

After many tries, I cannot manage to obtain the capillarity that takes place in the experiments. In my opinion, it's mainly because of the outlet boundary conditions.

Some of my colleages have managed to obtain these results using OPENFOAM and implementing the outlet boundary condition freestreamPressure, that makes the pressure gradient at the outlet null and the backflow of the particles zero.

I am trying to perform this simulation in Fluent, but I don't know how to do it. I think that the correct approach is using the Open Flow Channel VOF model and impose an outflow BC, but I haven't had results.


Could you please help me with this? Do you know if Open Flow Channel can be applied to axisymmetric pipes using an axisymmetric 2D model?



Thanks in advance.