[SFr]

I want to model 2-D incompressible fluid flow out of a tank, where two layers of fluid are initially in the tank. Someone solved this problem years ago for the situation I'm interested in. I'm trying to reproduce the results in OpenFOAM using the interFoam solver with pressure inlet and outlet boundary conditions.

So far I can't reproduce the results using OpenFOAM/interFoam. The results are very different from the original non-OpenFOAM results in terms of velocity. I can't figure out if I'm going wrong somewhere or if there's a bug in one of the codes. I can't find any published benchmarks for OpenFOAM/interFoam and pressure boundary conditions. Someone who has used interFoam told me that it's tough to deal with pressure boundary conditions, but I'm not sure if this means impossible!

I am looking for someone to help me figure out what the problem is. For example, maybe someone could:

1. Provide a result based on a different code that I can compare to the results I currently have. This should help me figure out which code has the problem. Or

2: Help me figure out how to deal with interFoam. I'm a beginner, so maybe there's some numerical setting I haven't set correctly or some other problem.

Any other ideas would be welcome.

I have received a response from Workshop Technologies; if anyone has any experience with using them, I'd love to know. Thank you.