Molecular dynamical calculations on the transport properties of a square-well fluid

The coefficient of viscosity for a system consisting of square-well molecules has been determined, by means of computer simulation, in a density region ranging from the critical up to densities which are just below the fluid-solid phase transition. The inclusion of an attractive part in the intermolecular potential has a profound influence on the viscosity, and is also responsible for an improvement in the correspondence with experimental evidence. A comparison with the Davis-Rice-Sengers (DRS) theory shows that the applicability of the latter is restricted.