### 13.1.3. Domain Interface: Solid Interface Models Tab

This tab is available when at least one side of the interface is on a porous domain that contains a solid.

The Solid Interface Models tab contains the following settings:

- Heat Transfer

  These settings are basically the same as the corresponding settings described in Heat Transfer.

  Note that:

  - Any additional heat transfer models are applied to the solid(s) in the porous domain(s).

  - The `Conservative Interface Flux` option is available only if there are solids on both sides of the domain interface.

- Additional Variable

  These settings are basically the same as the corresponding settings described in Additional Variable.

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