Stabilization procedures for near-wall full reynolds stress closures in complex 3-D CFD simulations

Abstract

Near-wall full Reynolds stress models (FRSMs) were implemented in an implicit, incompressible full Navier-Stokes algorithm. FRS modelling of complex high Reynolds number flows provides several numerical challenges germane to the very highly clustered near-wall meshes required, and to the incorporation of the FRSMs themselves. Several stabilization procedures have been deployed within the present scheme, which enable convergent solutions to large scale flow simulations of engineering interest. This paper summarizes these numerical strategies. Results for 2-D and 3-D curved duct flows and 2-D and 3-D turbine cascade flows are presented. It is shown that near-wall FRSM convergence rates commensurate with those of two-equation eddy viscosity models (EVMs) are obtained.