You are viewing the documentation for an older COMSOL version. The latest version is available here.
The Heat Transfer in Solids and Fluids Interface
The Heat Transfer in Solids and Fluids () interface is automatically added when a predefined multiphysics interface under the Conjugate Heat Transfer branch is added.
It is used to model heat transfer in solids and fluids by conduction, convection, and radiation. A Solid model is active by default on all domains, and a Fluid model is also added but not active.