The Rotating Machinery, Phase Transport Mixture Model Laminar Flow multiphysics interface () found under the Multiphase Flow > Rotating Machinery, Phase Transport Mixture Model branch (), is a multiphysics interface designed to simulate the coupling between phase transport and fluid flow in equipment containing one or more rotating parts. The flow is assumed to be laminar, that is, to be of low to moderate Reynolds number.

When adding the Rotating Machinery, Phase Transport Mixture Model Laminar Flow multiphysics interface, a Laminar Flow and a Phase Transport interface are added to the Model Builder. A Moving Mesh interface with a Rotating Domain node is added automatically in the Model Builder under the Definitions node. In addition, a multiphysics coupling feature, Mixture Model, is added automatically under the Multiphysics node.