[AtoHM]

Ok, I found a way to do it using topoSet without supplying a location.


As I pointed out, mergeMesh carries along the association of cells to the regions (regionToCell file). After using mergeMesh, one can use checkMesh which writes out polyMesh/sets/region* files.

Then, since I know in the script which sequence I used for merging (I know which regions corresponds to which mesh or body), I can produce automatically a topoSetDict which creates cellZones with my desired names:

    {
        action  new;
        type    cellZoneSet;
        name    Tank;
        source  setToCellZone;
        set     region0;
    }

Thats basically what I was looking for, although slightly more complicated.