Virial coefficients and equations of state for mixtures of hard discs, hard spheres and hard hyperspheres
Titel:
Virial coefficients and equations of state for mixtures of hard discs, hard spheres and hard hyperspheres
Auteur:
SANTOS, A. YUSTE, S.B. DE HARO, M.LOPEZ
Verschenen in:
Molecular physics
Paginering:
Jaargang 99 (2001) nr. 23 pagina's 1959-1972
Jaar:
2001-12-10
Inhoud:
The composition-independent virial coefficients of a d-dimensional binary mixture of (additive) hard hyperspheres following from a recent proposal for the equation of state of the mixture (Santos, A., Yuste, S. B., and Lopez de Haro, M., 1999, Molec. Phys., 96, 1) are examined. Good agreement between theoretical estimates and available exact or numerical results is found for d = 2, 3, 4 and 5, except for mixtures whose components are very disparate in size. A slight modification that remedies this deficiency is introduced and the resummation of the associated virial series is carried out, leading to a new proposal for the equation of state. The case of binary hard sphere mixtures (d = 3) is analysed in some detail.