The High Number Flow, v2-f (hmnf) interface () is found under the High Mach Number Flow > Turbulent Flow branch () when adding a physics interface. This is a predefined multiphysics interface which combines The Turbulent Flow, v2-f Interface for compressible flow with The Heat Transfer Module Interfaces.

A detailed description of the High Number Flow, v2-f (hmnf) interface, which models turbulent gas flows in the transonic and supersonic range, is analogous to The High Mach Number Flow, k-e Interface.