Virial coefficients, equation of state, and demixing of binary asymmetric nonadditive hard-disk mixtures
نویسندگان
چکیده
منابع مشابه
Theory of asymmetric nonadditive binary hard-sphere mixtures.
It is shown that the formal procedure of integrating out the degrees of freedom of the small spheres in a binary hard-sphere mixture works equally well for nonadditive as it does for additive mixtures. For highly asymmetric mixtures (small size ratios) the resulting effective Hamiltonian of the one-component fluid of big spheres, which consists of an infinite number of many-body interactions, s...
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– The phase behavior of binary fluid mixtures of hard hyperspheres in four and five dimensions is investigated. Spinodal instability is found by using a recent and accurate prescription for the equation of state of the mixture that requires the equation of state of the single component fluid as input. The role played by the dimensionality on the possible metastability of the demixing transition...
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We study the demixing transition of mixtures of equal size hard spheres and dipolar hard spheres using computer simulation and integral equation theories. Calculations are carried out at constant pressure, and it is found that there is a strong correlation between the total density and the composition. The critical temperature and the critical total density are found to increase with pressure. ...
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We present new molecular dynamics results for the pressure of the pure hard disk fluid up to the hexatic transition (about reduced density 0.9). The data combined with the known virial coefficients (up to B10) are used to build an equation of state, to estimate higher-order virial coefficients, and also to obtain a better value of B10. Finite size effects are discussed in detail. The “van der W...
متن کاملRescaled density expansions and demixing in hard-sphere binary mixtures.
The demixing transition of a binary fluid mixture of additive hard spheres is analyzed for different size asymmetries by starting from the exact low-density expansion of the pressure. Already within the second virial approximation the fluid separates into two phases of different composition with a lower consolute critical point. By successively incorporating the third, fourth, and fifth virial ...
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ژورنال
عنوان ژورنال: The Journal of Chemical Physics
سال: 2017
ISSN: 0021-9606,1089-7690
DOI: 10.1063/1.4990614