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Critical parameters of hard-core Yukawa fluids within the structural theory

Author

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  • Bahaa Khedr, M.
  • Osman, S.M.

Abstract

A purely statistical mechanical approach is proposed to account for the liquid–vapor critical point based on the mean density approximation (MDA) of the direct correlation function. The application to hard-core Yukawa (HCY) fluids facilitates the use of the series mean spherical approximation (SMSA). The location of the critical parameters for HCY fluid with variable intermolecular range is accurately calculated. Good agreement is observed with computer simulation results and with the inverse temperature expansion (ITE) predictions. The influence of the potential range on the critical parameters is demonstrated and the universality of the critical compressibility ratio is discussed. The behavior of the isochoric and isobaric heat capacities along the equilibrium line and the near vicinity of the critical point is discussed in details.

Suggested Citation

  • Bahaa Khedr, M. & Osman, S.M., 2012. "Critical parameters of hard-core Yukawa fluids within the structural theory," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(19), pages 4427-4441.
    • Handle: RePEc:eee:phsmap:v:391:y:2012:i:19:p:4427-4441
    DOI: 10.1016/j.physa.2012.04.006
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