Interfaces are used in STAR-CCM+ to allow continuum quantities such as mass and energy to be transferred across a pair of boundaries. They are generally applied in two main situations:
Any interfaces that are created during the simulation set up process are accessible via the Interfaces manager node.

Each interface node contained in the manager node is subject to common menu items.
In order to create, check and manipulate interfaces, STAR-CCM+ allows you to:
Prior to running the analysis, important techniques exist for making sure that interfaces function properly.
Interfaces may be deleted and named as desired. There are a number of various topologies supported to cater for different situations, with each topology supporting a variety of interface types depending on the topology and associated regions.