A nonlinear structural subgrid-scale closure for compressible MHD Part II: a priori comparison on turbulence simulation data

Understand

Even though compressible plasma turbulence is encountered in many astrophysical phenomena, its effect is often not well understood.

• Furthermore, direct numerical simulations are typically not able to reach the extreme parameters of these processes.
• For this reason, large-eddy simulations (LES), which only simulate large and intermediate scales directly, are employed.
• The smallest, unresolved scales and the interactions between small and large scales are introduced by means of a subgrid-scale (SGS) model.