“…[1]), the volume of fluid is conserved, while the shape of the fluid can considerably vary throughout the simulation, and can change topology (split and merge). In some astrophysic simulations [2,3,4], the Universe considered at a cosmological scale can be modeled as a "fluid" 1 . With the simplifying assumption that this fluid obeys the incompressible Euler equation, one can reconstruct the full dynamics of the Universe from the knowledge of the density fluid at current time [2,3,4].…”