ABSTRACT
The phase behavior of fluids is of central importance to many technological and scientific fields, for example in designing separations for the chemical and pharmaceutical industries or in understanding fundamental processes in living systems. A large body of experimental information has been gathered over the years (e.g., see [1]), and significant efforts have been made to understand the phenomenology of the transitions and to obtain empiricaland theoretical-based models that can be used to correlate and extend the range of experimental data. Experimental measurements are time-consuming and expensive. For multicomponent mixtures, measurements are available only for a limited number of temperatures, pressures, and compositions. Empirical models are only valid over the range of conditions for which experimental data have been used to obtain the model parameters. Even theoretical-based models have limited predictive abilities for conditions and systems different from the ones for which they have been tested against using experimental data [2].
