• Thermodynamic perturbation theory for the (12-6-n) fluids

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    • Keywords


      Equilibrium structure of simple liquids; radial distribution function; optimized cluster theory; Pade’ approximants; high temperature approximation

    • Abstract


      A perturbation method in which attractive forces are taken as perturbation of the repulsive (reference) forces is applied to calculate the thermodynamic properties of (12-6-n) fluids in terms of the properties of hard-sphere fluid. The numerical values of the thermodynamic properties (free energy per particle, compressibility and excess internal energy) for a range of temperature and density are given for (12-6-8) fluids. Further, two perturbation schemes are adopted to evaluate the total radial distribution function using the EXP version of the optimized cluster theory (OCT). The numerical results are reliable as reported at two states (T* = 1·036,ρ* = 0·65 andT* = 0·719ρ* = 0·85) for the (12-6-8) fluid and the Lennard-Jones (12-6) fluid as well.

    • Author Affiliations


      K P Shukla1

      1. Department of Physics, Banaras Hindu University, Varanasi - 221 005
    • Dates

  • Pramana – Journal of Physics | News

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