Multiphysics Interface
A Multiphysics Interface () is a combination of other physics, behaving like one single physics interface. The multiphysics interface inherits all features and properties that all the contained physics interfaces have, which are added through Contained Interface nodes. It is possible to remove features that do not work in a multiphysics context.
To add a Multiphysics Interface and to create a multiphysics interface that connects and add couplings between several physics interfaces:
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On the Home or Physics Interface toolbar, click the Add Multiphysics Interface button (), or
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Right-click the Root node (the top node) and choose Multiphysics Interface.
You can add features to the Multiphysics Interface node in these ways:
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On the Physics Interface toolbar, click the available buttons, or
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Right-click the Multiphysics Interface node and choose features from the context menu.
For example, see Features, User Inputs, Properties, Mesh Defaults, Study and Solver Defaults, Result Defaults.
The Settings window for the multiphysics interface is similar to that for a single physics interface but with some settings removed (because it is inherited from the contained interfaces).
See the Physics Interface node for these settings: Physics Area, Identifiers, and GUI Option. Also see Override Rule.
Restrictions
The default Intersect space dimensions is Contained interfaces, which restricts the space dimensions by intersecting the allowed space dimensions from the contained interfaces. Choose Custom dimensions and interfaces to add extra restrictions to the space dimensions.
From the Allowed study types list choose Intersection of interface types (the default) or Union of interface types to control how to combine the study-type restrictions from the contained interfaces. Select Customized to set the study types manually.
Settings
Choose the Default frame: Material, Spatial, Geometry frame, or Mesh. These have the same meaning as for the Physics Interface node. The top geometric entity level for the multiphysics interface is the maximum level among the contained interfaces.
GUI Options
In addition to the settings also available for a Physics Interface node, there is an Exclude equation display from contained interfaces check box. By default, the equation displays of the contained physics interfaces are shown in the multiphysics interface node. If you select this check box, the equations are not shown (allowing users to define their own equations).
Default Features
Similar to the Default Features section of the Physics Interface node, this section only lists the features flagged as default features for the multiphysics interface. In this list, you do not see any default features added by the Contained Interface node, only the default features added directly under the multiphysics interface.