[JR22]

Hi,

I am fairly new to OpenFoam (I am an ex-Comsol refugee). I am trying to use one of the pre-processing/meshing packages (Helyx-OS, Engrid, etc.) to model the internal flow of a contraption for which I have a surface file (STL). My problem is that I can't find a way of defining the inlet and outlet faces (boundaries) using such software. This has to be a common initial problem for beginners.

I have been trying to use a single STL of the whole contraption. Is there a surface-mesh format to use better than STL that allows definition of what faces are? I have been able to use Helyx-OS successfully to create a wind-tunnel type simulation. But this more basic one, purportedly simpler, is becoming kind of a pain.

Thank you very much,

Jose