New equations of state describing both the dynamic viscosity and selfdiffusion coefficient for potassium and thallium in their fluid phases
Abstract
Experimental data on the viscosity and selfdiffusion coefficient of two metallic compounds in their fluid phases, that is, potassium and thallium, are modeled using the translational elastic mode theory, which has been successfully applied to the case of water. It is shown that this theory allows the experimental data to be accounted for in accordance with their uncertainties and, above all, it allows the different variations observed between the different authors to be explained. Particularly in the case of thallium, this theory makes it possible to represent viscosity data with much better precision than the socalled reference equation of state. The dilutegas limit laws connecting various parameters of the theory obtained in the case of water are confirmed here and thus give them a universal character. The elastic mode theory is accompanied by the development of new equations of state, mainly to describe properties along the saturated vapor pressure curve, which greatly extend the temperature range of application of these equations compared to those found in the literature. The whole analysis thus makes it possible to propose precise values of various thermodynamic parameters at the melting and boiling temperature corresponding to atmospheric pressure.
 Publication:

Physics of Fluids
 Pub Date:
 January 2022
 DOI:
 10.1063/5.0079944
 arXiv:
 arXiv:2111.11977
 Bibcode:
 2022PhFl...34a7112A
 Keywords:

 Condensed Matter  Statistical Mechanics;
 Physics  Fluid Dynamics
 EPrint:
 47 pages, 38 figures, 8 tables. A link in the references will redirect you to the Mathematica computation program download page Accepted for publication in Phys. Fluids