A Scale-Adaptive Simulation Model using Two-Equation Models

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The Scale-Adaptive Simulation Method for Unsteady Turbulent Flow Predictions. Part 1: Theory and Model Description (2010, methodology): “In early papers on the new model (e.g. Menter and Egorov, [17]), a linear dependency of the term in Equation 15 on the second velocity derivative was proposed, whereas in the latest version a quadratic formulation is used (Menter et al., [21]).”
Hybrid LES/RANS methods for the simulation of turbulent flows (2008, methodology): “The SAS approach is then rephrased as an additional source term in the o-equation with some minor changes in order to preserve the RANS behavior of the SST model for boundary layer flows [123].”
Review of the shear-stress transport turbulence model experience from an industrial perspective (2009, methodology): “…for boundary layers flows, the SAS terms where further modified as additional terms to the o-equation in the SST model, in a way which does not affect the near wall SST–RANS model (for more details, see Menter and Egorov 2006, Menter et al. 2006a): QSAS ¼ r max z2kS2 L LvK 2 Cc 2 sF " k max 1 o2”