COMSOL 6.3 - Periodic Condition

Periodic Condition

The node adds a periodic boundary condition that can be used to reduce the model size by using symmetries and periodicities in the geometry and physics interfaces being modeled.

Boundary Selection


	The software usually automatically identifies the boundaries as either source boundaries or destination boundaries, as indicated in the selection list. This works fine for cases like opposing parallel boundaries. In other cases, right-click Periodic Condition and select Manual Destination Selection to control the destination. By default it contains the selection that COMSOL Multiphysics identifies.

Destination Selection

This section is available for specifying the destination boundaries, if needed, when the option is selected in the context menu for the node. You can only select destination boundaries from the union of all source and destination boundaries.

Periodicity Settings

Select a : (the default) or .

Constraint Settings

To display this section, click the button (

) and select in the dialog. This section contains settings for specifying the type of constraint and whether to use a pointwise or weak constraint. See Constraint Settings for more information.

Excluded Edges, Excluded Points

To display these sections ( in 3D geometries only), click the button (

) and select in the dialog. For more information about these sections, see Excluded Surfaces, Excluded Edges, and Excluded Points.

Orientation of Source

To display this section, click the button (

) and select in the dialog. For information about the section, see Orientation of Source and Destination.

Mapping Between Source and Destination

To display this section, click the button (

) and select in the dialog. For information about the section, see Mapping Between Source and Destination.