Use the Wall Heat Transfer node to set up heat exchange across the pipe wall. Define the external temperature and the nature of the heat transfer. The
Internal Film Resistance,
Wall Layer, and
External Film Resistance subnodes are available from the context menu (right-click the parent node) or from the
Physics toolbar,
Attributes menu. These compute heat transfer coefficients based on the section
Theory for the Heat Transfer in Pipes Interface.
Select an option from the External temperature list —
User defined, or
Temperature (ht/ht), the latter representing a temperature field calculated by a surrounding 3D solid physics. For
User defined enter a value for the
External Temperature Text (SI unit: K). If an expression is used for
Text that is a locally defined variable on the edge, the check box
Take average in adjacent domain should be cleared.