CORRELATION AND PREDICTION OF DENSE FLUID TRANSPORT-COEFFICIENTS .4. A NOTE ON DIFFUSION

Recent accurate calculations of the corrections to Enskog theory for hard-sphere diffusion have resulted in a revision of the hard-sphere based correlation for dense fluid transport coefficients. The expression previously given for the reduced diffusion coefficient in terms of reduced volume is adjusted in line with these values. No changes are required to the characteristic volumes but the roughness factors are reduced. Of particular note is the fact that methane now corresponds to a rough hard-sphere system.