The static and dynamic properties of binary mixtures of hard spheres with a diameter ratio ofσ_B/σ_A=0.1 and a mass ratio of mB/mA=0.001 are investigated using event driven moleculardynamics. The contact values of the pair correlation functions are found to compare favorably withrecently proposed theoretical expressions. The transport coefficients of the mixture, determinedfrom simulation, are compared to the predictions of the revised Enskog theory using both athird-order Sonine expansion and direct simulation Monte Carlo. Overall, the Enskog theoryprovides a fairly good description of the simulation data, with the exception of systems at thesmallest mole fraction of larger spheres (x_A=0.01) examined. A “fines effect” was observed athigher packing fractions, where adding smaller spheres to a system of large spheres decreases theviscosity of the mixture; this effect is not captured by the Enskog theory.
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