Thermal Insulation
This node is the default boundary condition for all Heat Transfer interfaces. This boundary condition means that there is no heat flux across the boundary:
and hence specifies where the domain is well insulated. Intuitively, this equation says that the temperature gradient across the boundary is zero. For this to be true, the temperature on one side of the boundary must equal the temperature on the other side. Because there is no temperature difference across the boundary, heat cannot transfer across it.
Location in User Interface
Context menus
Ribbon
Physics Tab with interface as Heat Transfer in Solids, Heat Transfer in Fluids, or Heat Transfer in Solids and Fluids selected: