A lattice mesoscopic model of dynamically heterogeneous fluids

Details A lattice mesoscopic model of dynamically heterogeneous fluids A lattice mesoscopic model of dynamically heterogeneous fluids

2005-10-04

arxiv.org/abs/cond-mat/0510086v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, to appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.95.224502

We introduce a mesoscopic three-dimensional Lattice Boltzmann Model which attempts to mimick the physical features associated with cage effects in dynamically heterogeneous fluids. To this purpose, we extend the standard Lattice Boltzmann dynamics with self-consistent constraints based on the non-local density of the surrounding fluid. The resulting dynamics exhibits typical features of dynamic heterogeneous fluids, such as non-Gaussian density distributions and long-time relaxation. Due to its intrinsically parallel dynamics, and absence of statistical noise, the method is expected to compute significantly faster than molecular dynamics, Monte Carlo and lattice glass models.

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