Turbulent gas motions in galaxy cluster simulations: the role of smoothed particle hydrodynamics viscosity
Turbulent gas motions in galaxy cluster simulations: the role of smoothed particle hydrodynamics viscosity
Smoothed particle hydrodynamics (SPH) employs an artificial viscosity to properly capture hydrodynamical shock waves. In its original formulation, the resulting numerical viscosity is large enough to suppress structure in the velocity field on scales well above the nominal resolution limit, and to damp the generation of turbulence by fluid instabilities. …