The Topology Data Model in its simplest form is a model that defines relationships between zones in the Mesh Data Model using named topological objects.
The Topology model abstracts the mesh into a collection of named Bodies (BodyId) and Face Uses (FaceUseId). Each of these objects will resolve to one or more face or cell zones found in the Mesh model.
Additionally, the concept of a Composite Name (CompositeId) is also available. It can be thought of as a union of other names that ultimately resolve one or more face or cell zones.
Typically the names in the Topology Data Model are used to define the locations of physics objects such as domains and boundaries found in the Physics Data Model, although they can be used in other ways as well, depending on the application that provides them.
