  In this work we will identify a novel relation between Smoothed Particle
Hydrodynamics (SPH) and explicit Large Eddy Simulation (LES) using a
coarse-graining method from Non-Equilibrium Molecular Dynamics (NEMD). While
the current literature points at the conclusion that characteristic SPH issues
become restrictive for subsonic turbulent flows, we see the potential to
mitigate these SPH issues by explicit subfilter stress (SFS) modelling. We
verify our theory by various simulations of homogeneous, isotropic turbulence
(HIT) at $Re=10^4$ and compare the results to a Direct Numerical Simulation
(DNS) reported by Dairay et al. (2017). Although the simulations substantiate
our theory, we see another issue arising, which is conceptually rooted in the
particle itself, termed as Particle Duality. Finally, we conclude our work by
acknowledging SPH as coarse-graining method for turbulent flows, highlighting
its capabilities and limitations.
