[badoumba]

Good morning everyone,

I am trying to set an external aerodynamic case with a symmetry plane in cfMesh. My 3D file is a stl, so there is only the patch name, no type (wall, patch, symmetry, slip...).
This is different from the racing car case in cfMesh website, although there is no symmetry plane declared in the fms file.

Should I simply use the renameBoundary dictionnary to change the type of my symmetry plane from whatever to symmetry?

boundaryLayers{
 ...
 symmetryPlaneLayerTopology 1;
 generateLayersAtSymmetryPlanes 0;
 ...
}

renameBoundary
{
 ...
 newPatchNames
 {
  sym
  {
   type symmetry
  }
 }
}

Thanks for any tip !

[peyman.davvalo.khongar]

Moi,

I suggest you to do this, its much easier.
If you have an stl file (for example geo.stl) with boundaries, simply run the following command:

surfaceFeatureEdges -angle n geo.stl geo.fms

where n can be any feature angle that you want. (you can use for example 60)
Then cfMesh creates you the fms format of your geometry. Open the fms file and you can put the types that you have for your faces in the fms file. As an example here i have a face called banana and its type wall:

1(
banana
wall)

965
(
(0.0317752 0.00886576 0.0240078)
(0.0146394 0.027969 0.0258469)
(0.0257587 0.0212725 -0.0234224)
...

and I change the wall type to symmetry

1(
banana
symmetry)

965
(
(0.0317752 0.00886576 0.0240078)
(0.0146394 0.027969 0.0258469)
(0.0257587 0.0212725 -0.0234224)
...

You can even change the name of the face from for example banana to apple in the fms file. Then instead of stl in your meshDict use the fms file.

Its much easier to do this.

Moikka,

Peyman