The Laminar Flow version of the Rotating Machinery, Nonisothermal Flow multiphysics interface, found under the Fluid Flow > Nonisothermal Flow > Rotating Machinery, Nonisothermal Flow branch when adding a physics interface, is used to simulate laminar flow and heat transfer in equipment containing one or more rotating parts.

Four study types are available for this physics interface. Using the Time Dependent study type, the rotation is achieved through moving mesh functionality, also known as sliding mesh. Using the Frozen Rotor study, the rotating parts are kept frozen in position, and the rotation is accounted for by the inclusion of centrifugal and Coriolis forces. The Time Dependent, One-Way NITF and Frozen Rotor, One-Way NITF study are used for frozen rotor and time dependent nonisothermal flow computations where the temperature variations are so small that they do not affect the flow.

When adding the multiphysics interface, the Laminar Flow and Heat Transfer in Fluids interfaces 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, the Multiphysics node is added, which automatically includes the multiphysics coupling feature Nonisothermal Flow.