[KTG]

Hello Foamers,

I am trying to construct an internal mesh for a geometry that occupies only a small fraction of its bounding box. Please see the attached figure for an image of the .stl surface and blockMesh. It is one interior region, and I am using snappyHexMesh. As you can imagine, when using simple decomposition, many processors end up with a section of the base mesh that immediately gets thrown away during snappy. I tried to get around this by just decomposing in only one direction, but it seemed to cause an MPI nightmare because I got back an error about openfabrics from the cluster (it was a lame idea, but worth a try). I have been scouring the internet to try to figure out how to use manual coefficients, but I can't find and example of the format the file needs to be, and don't know the best way to break up the interior cells into chunks with minimal boundaries. If anyone has an example case file, or some advice, I am not even sure where to start.

Thanks!