Selecting Laminar Flow, Diluted Species under the Chemical Species Transport>Reacting Flow branch of the Model Wizard or Add Physics windows, a Laminar Flow interface and a Transport of Diluted Species interface are added to the Model Builder.

In addition, the Multiphysics node is added, which includes the multiphysics coupling feature Reacting Flow, Diluted Species. The Reacting Flow, Diluted Species feature predefines and controls the couplings between the separate interfaces in order to facilitate easy set up of models.