title: Towards a mesoscopic model of water-like fluids with hydrodynamic interactions.
abstract: We present a mesoscopic lattice model for non-ideal fluid flows with directional interactions, mimicking the effects of hydrogen bonds in water. The model supports a rich and complex structural dynamics of the orientational order parameter, and exhibits the formation of disordered domains whose size and shape depend on the relative strength of directional order and thermal diffusivity. By letting the directional forces carry an inverse density dependence, the model is able to display a correlation between ordered domains and low density regions, reflecting the idea of water as a denser liquid in the disordered state than in the ordered one.
authors.affiliation: IAC-CNR, via dei Taurini 9, 00185, Roma, Italy. irene.mazzitelli@gmail.com
authors.forename: Irene
authors.initials: I
authors.lastname: Mazzitelli
authors.forename: Maddalena
authors.initials: M
authors.lastname: Venturoli
authors.forename: Simone
authors.initials: S
authors.lastname: Melchionna
authors.forename: Sauro
authors.initials: S
authors.lastname: Succi
mesh_terms: D004058:Diffusion; D057446:Hydrodynamics; D006860:Hydrogen Bonding; D056004:Molecular Dynamics Simulation; D009010:Monte Carlo Method; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water