Coupling Based on Model Inputs

This option does not use any multiphysics feature. Instead you define the model inputs in each physics interface. You define the temperature model input in the flow interface and the velocity and pressure model inputs in the heat transfer interface. This approach is valid for laminar flow only. Also, the consistent stabilization does not account for the multiphysics coupling, which can lead to convergence issues when the multiphysics coupling is strong. Pressure work and viscous dissipation are not handled. In addition the physics interface settings may not be optimal for the numerical treatment of the coupling.

One interesting aspect of this method it that the temperature, velocity, or pressure field does not have to be a dependent variable. You can use an analytical expression instead.