Recently derived expressions for the transport coefficients of a dense fluid of square-well rough spheres and corresponding expressions for smooth spheres have been evaluated with structural data generated in computer simulations. The results are used with recommended square-well potential parameters to calculate the tranport properties of methane for both models. For the shear viscosity and thermal conductivity the rough-sphere values have the better agreement with experiment, while for the self-diffusion coefficient they have marginally the worse agreement. No experimental data exist with which to compare the calculated bulk viscosities, which are considerably higher for rough than for smooth spheres.
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Scarfe et al. (1976) studied this question.
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