When you include surfaces as part of the definition of your fluid domain, you can also
use them as the supports for features you create in the fluid scenario. Defining
features in this way offers a few advantages:
- The mesh is not rendered out of date as you create and remove boundary
conditions. You can specify the surfaces that interest you, and you only have to
generate the mesh once.
- You can define the surface selections of the fluid domain with descriptive names
that help you identify and select them more easily during scenario
creation.
- When you define multiple surfaces as part of the fluid domain definition, these
surfaces are collected together as a named object. You can then reuse this group
of surfaces during scenario creation, rather than selecting every surface
individually.