Renormalization group-based subgrid scale turbulence closures

Abstract

Dynamic renormalization group methods are applied to the derivation of subgrid scale (SGS) closures for high Reynolds number (R) turbulence. The resulting SGS closures are attractive in that they do not require additional ad hoc treatment of wall layers and may be used to derive SGS closures for more complicated physical problems, such as flows with buoyancy effects or chemical reactions, without additional arbitrary modelling parameters. Numerical experiments with these SGS closures for turbulent channel flow at high Reynolds number show that the resulting closures give results that are in reasonable agreement with experiment.