Abstract

Molecular dynamics calculations have been carried out for binary and ternary Lennard-Jones liquid mixtures. Local compositions (LC) within the first peak of radial distribution function (RDF) have been evaluated. These mixtures show rather smaller deviation from ideality than with previously used models and the dependence of the LC on attractive interaction is the reverse of that of the peak height of RDF. A simple correlation is derived between LC and the peak height, based on a Wilson type equation.

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