inflation operates differently depending on whether meshing occurs at the part/body level or assembly level.
Note: inflation is only supported for 3D models.
Program Controlled Inflation for Part/Body Level Meshing
If you are using a mesh method that operates at the part/body level and you select inflation, all faces in the model are selected to be inflation boundaries, except for the following:
Faces in Named Selection(s)
Note:By default, faces in Named Selections are not selected to be inflation boundaries when Use Automatic Inflation is set to . However, you can select specific Named Selections to be included in inflation. For details, see the discussion of Named Selections and inflation in the Mechanical help.
When you select Use Automatic Inflation as Program Controlled and add or remove a named selection, the application assumes the scoped faces have changed. Hence, the mesh becomes obsolete and must be regenerated.
Faces in Contact region(s)
Faces in Symmetry definition
Faces that belong to a part/body that has a mesh method defined on it that does not support 3D inflation definitions (mesh method is set to Sweep or Hex Dominant)
Faces in sheet bodies
Faces on bodies that have manual inflation controls
When automatic inflation is used for part or body level meshing, the mesher inflates in the following manner:
For single body parts, the face always inflates into the body.
For multibody parts with a mix of fluid and solid parts:
Faces on fluid region inflate into fluid region, solid region is not inflated.
Faces on parts of the same material are not inflated.
For parts of the same material, shared faces are not inflated.
The manner in which inflation is applied depends on values that you enter for the following options: