Relaxed glass IC generated by the IC generator outlined in Sect. 3.2. Here we model the IC of the Kelvin Helmholtz instability (Sect. 4.3), with a density contrast of ∆ρ = 8. Top : particle distribution within a thin slice of thickness ∆ z = 0.015. Bottom : density profile in the y direction. The red line depicts the analytical density profile and the black dots the density of the particles. The glass generated density profile is in excellent agreement with the analytical solution.