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Gravity‐Induced Density And Concentration Profiles In Binary Mixtures Near Gas–Liquid Critical Lines, R. F. Chang, J. M. H. Levelt Sengers, T. Doiron, J. Jones

Physics Publications

We have calculated gravity‐induced density and concentration gradients using scaled equations of state fashioned after that of Leung and Griffiths for binary mixtures near gas–liquid critical lines. The mixtures considered here are those of helium‐3 and helium‐4 and of carbon dioxide and ethane. Our calculations show that the density profiles for both mixtures in any proportion of the components are similar to those of pure fluids. The concentration gradients in the helium mixture have the same appearance as the density gradients. In the carbon dioxide–ethane system, however, the form of the concentration profile varies greatly, depending on the overall composition. …