Transport properties of the Widom–Rowlinson hard-sphere mixture model

The thermal conductivity, mutual diffusion coefficient, and viscosities of the hard-sphere Widom–Rowlinson Model are studied in quantitative detail within the framework of revised Enskog theory. It is found that the thermal conductivity and viscosities behave smoothly at the critical point, whereas the mutual diffusion coefficient vanishes strongly at the critical point and along the spinodal curve. (We note that the latter coefficient does not appear to vanish at the critical point, when analyzed in the framework of the less satisfactory standard Enskog theory.)