Critical dynamics in a binary fluid: simulations and finite-size scaling.
We report comprehensive simulations of the critical dynamics of a symmetric binary Lennard-Jones mixture near its consolute point. The self-diffusion coefficient exhibits no detectable anomaly. The data for the shear viscosity and the mutual-diffusion coefficient are fully consistent with the asymptotic power laws and amplitudes predicted by renormalization-group and mode-coupling theories provided finite-size effects and the background contribution to the relevant Onsager coefficient are suitably accounted for. This resolves a controversy raised by recent molecular simulations.
Das
Subir K
SK
Institute for Physical Science and Technology, University of Maryland, College Park, 20742, USA.
Fisher
Michael E
ME
Sengers
Jan V
JV
Horbach
Jürgen
J
Binder
Kurt
K