Dynamic Bridging for Coarse Grained Simulations of Turbulent Material Mixing

We revisit coarse-grained simulation strategies for turbulent material mixing applications involving shock-driven turbulence, based on bridging LANL’s Radiation Adaptive Grid Eulerian (xRAGE)—implicit large-eddy simulation (ILES), and Besnard-Harlow-Rauenzahn (BHR)—Reynolds-Averaged Navier-Stokes (RANS), using Low-Mach-Corrected (LMC) hydrodynamics. Tests of a new dynamic LMC-xRAGE/BHR bridging paradigm demonstrate much-improved scale-resolving enabling higher simulated mixing and turbulence levels on coarser grids. Impact assessments are carried out based on simulations of a canonical shock-tube experiment.