When using the watertight geometry workflow to create a Unified Topology Layer (UTL) mesh, as described in Unified Topology Layer (UTL), you can select geometrical bodies by Topology for the following tasks:
Note: To enable the UTL approach, you must start the meshing mode of Fluent with the Pro licensing level.
Add Local Sizing
Set up Periodic Boundaries
Create Local Refinement Regions
Add Boundary Type
Describe Geometry
Add Boundary Layers
Add Multizone Controls
Update Boundaries
Extrude Volume Mesh
Transform Volume Mesh