[jgross]

Hi people,

I'm trying to use cfMesh to mesh a 2D geometry which is characterised by two domains. I will be meshing each of these domains separately and combining them after using mergeMeshes. The issue is that both of the domains will have patches with the names topEmptyFaces and bottomEmptyFaces when I then use createPatch after merging.

Therefore, I would like to use newPatchNames in the meshDict to redefine the names of those two patches. Unfortunately, it doesn't seem to work with those patches. All the other patches can be renamed just fine. It's just those two.

I've tried a number of ways, including:

    ".*EmptyFaces"
    {
      newName       shroud;
      type          empty;
    }

    "(topEmptyFaces & bottomEmptyFaces)"
    {
      newName       shroud;
      type          empty;
    }

    topEmptyFaces
    {
      newName       shroud;
      type          empty;
    }

Any ideas as to what is the proper syntax in this case? I have looked at all the tutorial files available for cartesian2DMesh and none of them include any indication of how to do this.

Any help is greatly appreciated.

James

[Lookid]

Hey,

cartesian2DMesh is looking at the patch in the .stl file to assign the name at the boundary, right?
If so, it won't find the empty faces as your .stl is a ribbon.

You can do this another way, it's by setting something like :

defaultName myEmptyPatches;
defaultPatch empty;
// now all the patches are empty...
// ... but you need to overwrite the useful patches

newPatchName
{
   blade
   {
    newName blade; //does it work to assign the same name?
    newType wall;
   }

   etc...
   
}

But you have to define all other patches

[jgross]

Hi Lilian,

Yeah, cartesian2DMesh takes in the ribbon stl and automatically defines the empty patches. I was having trouble with renaming it, but as you wrote, I ended up just defining the default patches as the desired name. Works just fine now. Actually, I figured it out a couple of minutes after posting this haha.

Anyway, thanks a lot for the advice man.

James