Use the Thermal Connection, Layered Shell, Edge multiphysics coupling () to define a continuity condition across an edge and a surface between a temperature field from a heat transfer in domain interface and a temperature field from a heat transfer in shell interface for which the Shell type is set to Layered shell.

By default the edge selection is locked and set all edges that belong to the two physics interfaces selected in the Coupled Interfaces section. When Manual control of selections option is selected in the Connection Settings section, it is possible to edit the edge selection.

By default the boundary selection is locked and set to all external boundaries that are adjacent to the edges selected in the Edge Selection section. When Manual control of selections option is selected in the Connection Settings section, it is possible to edit the boundary selection.

Select the Heat transfer interface (any of the domain heat transfer interfaces) and Heat transfer in shells interface (any of the shell heat transfer interfaces) to couple.

By default the continuity condition is applied all along the shell thickness. In case of a layered material with more than one layer, clear the Use all layers option to select a layered material and define the layers where the continuity condition is active.

In case the continuity condition should not be applied to the entire selection, select the Manual control of selections option and edit the selections in the Boundary selection, Heat and Boundary selection, Shell sections above.

With the default option for Connection tolerance, Automatic, the tolerance Δ is set to 0.5% of the shell thickness, which allows for small inaccuracies on, for example, a curved geometry. By selecting User defined, you can modify the value of Δ.