On the three-factor models and the subregular approximation in phase diagram calculation

An algorithm for the systematic investigation of the values of the excess Gibbs free energy of a ternary system and the partial excess Gibbs free energies of its components as predicted by a large class of three-factor models in the subregular approximation is presented. The equations used in ternary phase diagram calculation are written in a form that emphasizes the three-factor model dependent part of each function.