Theoretical and CFD analysis of gravity and galaxy formation and rotation in a dilatant vacuum

Following some successful computations in which the vacuum has been treated as a non-Newtonian dilatant fluid, to solve the perihelion precession of the planet Mercury and to obtain a better solution for the Pioneer anomaly, in this study we proceed with describing gravity, both at micro- and macro-level, as well as galaxy formation, shape and rotation, still according to a dilatant vacuum, also by means of high-resolution computational fluid dynamics simulations. We show that the gravitational model is compatible with general relativity and we obtain various galaxy shapes, along with the flat-profile of rotation velocity, without resorting to dark matter. These further evidences seem to confirm that physical vacuum is a dilatant quantum fluid, probably a hydrodynamic feature of the viscous Higgs field.