The Heat Transfer in Fluids (ht) interface (

) is used to model heat transfer in fluids by conduction, convection, and radiation. A
Fluid model is active by default on all domains. All functionality for including other domain types, such as a solid domain, is also available.
When this version of the physics interface is added, these default nodes are added to the Model Builder:
Fluid,
Thermal Insulation (the default boundary condition), and
Initial Values. Then, from the
Physics toolbar, add other nodes that implement, for example, boundary conditions and sources. You can also right-click
Heat Transfer in Fluids to select physics features from the context menu.