Physics Builder Tools > Selections > Selection Component Filter

Selection Component Filter
A Selection Component Filter node () filters the selection by using selection components. It is basically a reference to a Selection. This filter is versatile and can be used to, for example, find the selections that are adjacent to features of certain types. The output selection of this filter can be of an entity level that is higher than that of the physics feature that should use the selection. In this case the entity level of the selection is lowered by taking the adjacent entities of the selection.
To add a Selection Component Filter:
1
Under Definitions Library right-click the Selections node () and choose Selection Filter Sequence from the context menu.
2
Right-click Selection Filter Sequence () and choose Selection Component Filter from the context menu.
The Settings window has the following section:
Selection
Choose a Selection: Operation on sibling-feature selections (the default) or From definitions library.
For Operation on sibling-feature selections also choose an Operation type: Union, Intersection, Difference, or Complement and enter information in the table.
Named Selections in the COMSOL Multiphysics Reference Manual