Transport coefficients of soft sphere fluids at high densities

Details Transport coefficients of soft sphere fluids at high densities Transport coefficients of soft sphere fluids at high densities

2010-03-19

arxiv.org/abs/1003.3789v1

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 16 figs.

Scientific paper

Molecular dynamics computer simulation has been used to compute the self-diffusion coefficient, and shear viscosity of soft-sphere fluids, in which the particles interact through the soft-sphere or inverse power pair potential. The calculations have been made along the melting line in a wide range of pressures and temperatures. The validity of scaling relations for thermodynamic parameters and kinetic coefficients was checked. It was shown that the Stokes-Einstein relationship is obeyed if the Barker diameter is used as a characteristic length scale. It was also shown that the viscosity is non-monotonic along the isochores as predicted by Ya. Rosenfeld. It was shown that the viscosity is strongly growing along the melting line, however, this increase does not stimulate the glass transition because the relaxation time is decreasing.

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