The LES Smagorinsky (spf) interface () is used for simulating single-phase flows at high Reynolds numbers by resolving the larger three-dimensional unsteady eddies and modeling the effect of the smaller eddies. The physics interface is currently only suitable for incompressible flows.

The LES Smagorinsky interface should only be used for three-dimensional, time-dependent analyses. The main feature is Fluid Properties, which adds the Navier-Stokes and continuity equations, and provides an interface for defining the fluid material and its properties. When this physics interface is added, the following default nodes are also added in the Model Builder: Fluid Properties, Initial Values, and Wall.

Except where included below, see The Laminar Flow Interface for all the other settings.

A different LES model can be selected under Turbulence model. A RANS turbulence model can be selected by changing the Turbulence model type to RANS. Laminar or creeping flow may be simulated by changing the Turbulence model type to None.

The Turbulence model property disables the Neglect inertial term (Stokes flow) check box and Enable porous media domains check box.