PMID: 15244880Jul 13, 2004Paper

Thermodynamic properties of He-H2 fluid mixtures over a wide range of temperatures and pressures

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
I AliR N Singh

Abstract

The effect of pressure P and temperature T on the properties of mixing of helium-hydrogen (He-H2 ) fluid mixture is studied based on statistical mechanical perturbation theory. The constituent species are considered to be interacting via a pair potential consisting of short range repulsion and a long range attraction which has been included through a double Yukawa (DY) potential. He and H2 are the lightest elements; therefore, the quantum effect is included via first-order quantum correction in the framework of Wigner-Kirkwood expansion. The dimerization of the H2 molecule is treated as a hard convex body fluid for which the equation of state (EOS) can be derived from hard sphere system based on scaled particle theory. An advanced and most recent EOS has been used for our investigation. The use of the DY potential, which can readily be simulated to empirical potentials, has enabled us to obtain analytical expressions for attractive and quantum energy contributions in terms of Laplace transforms. With a view to ensure internal consistency of the various thermodynamic functions to extract information on segregation and order in the mixture, different functions, such as compressibility factor, Gibbs free energy of mixing, entropy ...Continue Reading

References

Jan 1, 1995·Physical Review. E, Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics·S M Osman, R N Singh

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Citations

May 7, 2014·BioMed Research International·Ru Shen, Chittibabu Guda
Jul 16, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·S M OsmanA Ben Abdellah
May 19, 2009·Chemical Reviews·Shiqi Zhou, J R Solana

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