Thermal Contact Action
Description
The ThermalContactAction action sets up the set of models used to enforce thermal contact across two surfaces. See the description, example use, and parameters on the ThermalContact system documentation page.
Gap offset parameters
Gap offset can be provided to the current contact formulation via the PenetrationAux. It can be either secondary_gap_offset (gap offset from secondary side) or mapped_primary_gap_offset (gap offset from primary side but mapped to secondary side). Use of these gap offset parameters treats the surfaces as if they were virtually extended (positive offset value) or narrowed (negative offset value) by the specified amount, so that the surfaces are treated as if they are closer or further away than they actually are. There is no resistance to heat transfer within the material in this gap offset region.