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Prediction of equilibrium thermodynamic properties of simple liquids in the model with four-parametric oscillating interaction potential

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Abstract

The equilibrium thermodynamic properties of simple liquids are described quantitatively using a statistical approach based on the model with a four-parametric oscillating interaction potential. The problem of selecting the constants of the initial potential for reproducing of the experimental pattern correctly is reduced to determining a single variable parameter. Asymptotically exact concepts are obtained for the inter-particle potential and for thermodynamic functions, which depend only on this parameter (the optimal value of this parameter is used for calculating the properties of the model on the phase-equilibrium line and in the supercritical region). The results of calculations are compared with experimental data and the results of the models with two-constant equations of state of the cubic type.

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Authors and Affiliations

  1. Donetsk National Technical University, ul. Artema 58, Donetsk, 83000, Ukraine

    I. K. Loktionov

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  1. I. K. Loktionov
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Correspondence to I. K. Loktionov.

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Original Russian Text © I.K. Loktionov, 2015, published in Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 85, No. 3, pp. 1–10.

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Loktionov, I.K. Prediction of equilibrium thermodynamic properties of simple liquids in the model with four-parametric oscillating interaction potential. Tech. Phys. 60, 317–326 (2015). https://doi.org/10.1134/S1063784215030160

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  • DOI: https://doi.org/10.1134/S1063784215030160

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