Description: The RNG k– model is a two-equation model based on renormalization group theory that accounts for the effects of small scales of motion in contrast to the standard k– model that bases its turbulent viscosity on a single length scale. The RNG k– model attempts to account for the contribution of multiple scales to the dissipation rate. The RNG k– model in Abaqus/CFD is implemented using wall functions that rely on an advanced normal-distance level-set function to accurately locate the near-wall region in complex geometry. As a two-equation model, the incremental computational cost increase is quite small relative to the Spalart-Allmaras model.

Step module:
    StepCreate: General: Flow; Turbulence tabbed page: k-epsilon renormalization group (RNG)