• J P Sinha

      Articles written in Pramana – Journal of Physics

    • Equilibrium properties of hard non-sphere fluids

      T P Singh J P Sinha S K Sinha

      More Details Abstract Fulltext PDF

      Derivation of the thermodynamic properties of fluids of hard non-spherical molecules of arbitrary symmetry is based on the decoupling approximation. Theoretical expressions are given and calculations made for the equation of state and virial coefficients for hard ellipsoids. These results are compared with Monte Carlo values and show fair agreement in all cases. The theoretical predictions for the equation of state for binary mixtures are compared with the Monte Carlo results for hard spheres and hard prolate spherocylinders. Theoretical expressions for the first order quantum correction to the free energy, pressure and virial coefficients are also given. The quantum effects increase with increase of density and with increase of anisotropy parameter.

    • Perturbation theory for thermodynamic properties of a ν-dimensional square-well fluid

      J P Sinha S K Sinha

      More Details Abstract Fulltext PDF

      The Barker-Henderson perturbation theory is used for a ν-dimensional fluid with square-well potential. Analytic expressions are given for the equation of state, excess free energy per particle and internal energy. The numerical results are discussed. A significant feature is the increase of the thermodynamic properties with increasing dimensionality.

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