To add a Generic Multiphysics Coupling node (), under Building Blocks, right-click the Multiphysics Couplings branch node to add this from the context menu. You can right-click the Generic Multiphysics Coupling node to add many features.

Under a coupling feature there is no parent physics interface, so the normal phys prefix is useless (unless it is used under a Coupling Type Contribution node). Instead there is the possibility to append the coupling type to the physics scope; see the Couplings section below. So inside a coupling feature that couples to a physics of coupling type A, the prefix phys.A works in the same way as the prefix phys would under the physics interface of type A.

See Generic Feature for information about the Identifiers, Restrictions, Selection Settings (see also below), Coordinate Systems, and Preferences sections.

This section has a table that defines the names and descriptions of the coupling types that the coupling feature requires. The coupling feature is not available under the Multiphysics branch in the Model Builder unless at least one physics interface of each coupling type has been added to the same model component. To define the coupling type of a physics interface in regard to a coupling feature, see Multiphysics Coupling.

The coupling feature instance in the Model Builder has a section with a title given by the description of the coupling feature. This section contains one list for each coupling type. The lists are used to pick the physics interfaces that the coupling feature is coupled to. The descriptions of the lists are given by the descriptions of the coupling types, defined in the second column of the table.

The list under Allowed space dimensions includes all space dimensions except 0D by default. Click the Add button () to choose one or more space dimensions that are not already included from the Allowed space dimensions list in the Add window that opens. Use the Move Up , Move Down , and Delete buttons under the table to organize the list if needed.

The list under Allowed study types includes Stationary and Time dependent by default. Click the Add button () to choose one or more study types that are not already included from the Allowed study types list in the Add window that opens. Use the Move Up , Move Down , and Delete buttons under the table to organize the list if needed.

This section works in the same way as the same section for a Generic Feature, but there is one extra thing to keep in mind when specifying the override type of a coupling feature. The override type specified under the Selection Settings section is only used to determine the override behavior of the coupling feature in regard to other coupling features in the Multiphysics branch. A coupling feature can also override the physics features of the physics interfaces that it is coupled to. However, the way in which that is done is determined by another override type, which you specify in the Multiphysics Coupling node.

From the Input base vector system list, choose Frame system (the default), Selected input coordinate system, Spatial coordinate system, Material coordinate system, Mesh coordinate system, or Geometry coordinate system.

From the Base vector system list, choose Frame system (the default), Selected input coordinate system, Spatial coordinate system, Material coordinate system, Mesh coordinate system, or Geometry coordinate system.

From the Frame type list, choose Selectable by user, Spatial, or Material (the default).

Select the Singleton feature check box if this multiphysics feature only can be added once.

Select the Include model inputs check box if this multiphysics feature should include model inputs.

From the Hide feature from context menus list, choose No (the default); Yes, if you do not want this multiphysics feature to appear on context menus; Only for develop off; or Technology preview disabled. The last two options are for in-house use only.