An equation of state for Stockmayer fluids based on a perturbation theory for dipolar hard spheres

2019 ◽  
Vol 151 (10) ◽  
pp. 104102 ◽  
Author(s):  
Marc Theiss ◽  
Thijs van Westen ◽  
Joachim Gross
Keyword(s):  
Perturbation Theory ◽  
Equation Of State ◽  
Hard Spheres

Excess entropy of the systems of molecules differing in size and shape

1983 ◽  
Vol 48 (1) ◽  
pp. 192-198 ◽  
Author(s):  
Tomáš Boublík
Keyword(s):  
Equation Of State ◽  
Hard Spheres ◽  
Excess Entropy ◽  
Convex Bodies ◽  
Pure Substance ◽  
Liquid Equilibrium ◽  
Simple Rules ◽  
Different Shapes ◽  
The Mean

The excess entropy of mixing of mixtures of hard spheres and spherocylinders is determined from an equation of state of hard convex bodies. The obtained dependence of excess entropy on composition was used to find the accuracy of determining ΔSE from relations employed for the correlation and prediction of vapour-liquid equilibrium. Simple rules were proposed for establishing the mean parameter of nonsphericity for mixtures of hard bodies of different shapes allowing to describe the P-V-T behaviour of solutions in terms of the equation of state fo pure substance. The determination of ΔSE by means of these rules is discussed.

Critical consolute point in hard-sphere binary mixtures: Effect of the value of the eighth and higher virial coefficients on its location

2010 ◽  
Vol 75 (3) ◽  
pp. 359-369 ◽  
Author(s):  
Mariano López De Haro ◽  
Anatol Malijevský ◽  
Stanislav Labík
Keyword(s):  
Equation Of State ◽  
Binary Mixtures ◽  
Hard Sphere ◽  
Hard Spheres ◽  
Virial Coefficients ◽  
Fluid Mixture ◽  
Binary Fluid ◽  
Virial Series ◽  
Consolute Point ◽  
Critical Constants

Various truncations for the virial series of a binary fluid mixture of additive hard spheres are used to analyze the location of the critical consolute point of this system for different size asymmetries. The effect of uncertainties in the values of the eighth virial coefficients on the resulting critical constants is assessed. It is also shown that a replacement of the exact virial coefficients in lieu of the corresponding coefficients in the virial expansion of the analytical Boublík–Mansoori–Carnahan–Starling–Leland equation of state, which still leads to an analytical equation of state, may lead to a critical consolute point in the system.

“Sticky” Hard Spheres: Equation of State, Phase Diagram, and Metastable Gels

2007 ◽  
Vol 99 (9) ◽  
Author(s):  
Stefano Buzzaccaro ◽  
Roberto Rusconi ◽  
Roberto Piazza
Keyword(s):  
Phase Diagram ◽  
Equation Of State ◽  
Hard Spheres

Perturbation Theory and Equation of State for Fluids

1969 ◽  
Vol 182 (1) ◽  
pp. 307-316 ◽  
Author(s):  
Dominique Levesque ◽  
Loup Verlet
Keyword(s):  
Perturbation Theory ◽  
Equation Of State
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