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Ye S., Lagourette B., Alliez J., Saint-Guirons H., Xans P. and Montel F., 1992. Speed of sound in binary mixtures as a function of temperature and pressure. Fluid Phase Equilibria, 74:177-202. This paper reports experimental speed of sound measurements made at different pressures and temperatures for moderately (n-C6-n-C16) or markedly (C1-n-C16, CO2-n-C16) asymmetric binary mixtures at various concentrations. The results of comparative numerical tests of calculated speed of sound values, using six equations of state, are then reported. These tests used internal mixing rules (applicable to the specific coefficients of each equation of state) and external mixing rules (applicable to the critical coordinates of the components). The associations of equations of state and mixing rules which were found to be best able to describe the behaviour of the speed of sound in binary systems are demonstrated. |
