New equation of state for double Yukawa potential with application to Lennard-Jones fluids

M. Bahaa Khedr, S. M. Osman, M. S. Al Busaidi

Research output: Contribution to journalArticle

7 Citations (Scopus)


We present a simple but accurate equation of state for double Yukawa fluids based on the variational series mean spherical approximation (VSMSA). This allows us to investigate the vapour-liquid equilibrium and its related thermodynamic properties. The comparisons with computer simulation results of the Lennard-Jones (LJ) potential suggest the importance of treating the attractive tail of the potential accurately via VSMSA. The estimated reduced critical parameters TC = 1.342, ρC = 0.29 and PC = 0.135 are in good agreement with other theoretical and computer simulation results for the LJ system.

Original languageEnglish
Pages (from-to)237-249
Number of pages13
JournalPhysics and Chemistry of Liquids
Issue number3
Publication statusPublished - Jun 2009



  • Equation of state of simple liquids
  • Liquid-vapour coexistence
  • Properties of double Yukawa potential
  • Theory of simple liquids

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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