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  • 1
    Electronic Resource
    Electronic Resource
    New methods for calculating the dew/bubble curves of classical model fluids (1989)
    Springer
    Journal of statistical physics 57 (1989), S. 937-963 
    Details
    ISSN: 1572-9613
    Keywords: Coexistence curve ; critical point ; dew/bubble curve ; phase transitions ; polydisperse ; series expansions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe two new methods for locating the dew/bubble curves of fluids. One is a numerical method and the other an analytical method based on the use of series expansions. The utility of these two methods is illustrated by application to a simple one-component fluid model and to several model polydisperse fluids. The numerical method is based on a new geometric representation of the equilibrium conditions-similar in spirit to the geometric representations often used for solving the equilibrium conditions of pure fluids. Our calculations show that the series-expansion technique can be quite effective at producing accurate representations of the phase boundaries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01022842
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    New methods for locating phase boundaries (1989)
    Springer
    International journal of thermophysics 10 (1989), S. 75-85 
    Details
    ISSN: 1572-9567
    Keywords: coexistence curve ; critical point ; dew/bubble curve ; phase transitions ; polydisperse
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A new geometric representation for the dew/bubble conditions of a special class of polydisperse fluids is used to develop series expansion representations for the location of the top of the dew/bubble and shadow curves and for an expansion around the top of the dew/bubble and shadow curves. An excellent approximation for the one-comonent van der Waals coexistence is given as a special illustration of the method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00500709
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The shear viscosity and mutual diffusion coefficients of binary mixtures using the modified Enskog Theory (1989)
    Springer
    International journal of thermophysics 10 (1989), S. 963-971 
    Details
    ISSN: 1572-9567
    Keywords: argon ; diffusion ; Enskog theory ; helium ; krypton ; mixtures ; modified Enskog theory ; neon ; virial coefficients ; viscosity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We use an extended form of the modified Enskog Theory (MET) to calculate viscosity and mutual diffusion coefficients for several binary mixtures. Second and third virial coefficients are required for the calculations. We find that the extended MET provides predictions of the shear viscosity for He-Ar and Ne-Ar mixtures with an accuracy of 2% at densities up to 6 mol · L−1. Extended MET values of mutual diffusion coefficients of binary mixtures in which the mole fraction of one component approaches zero were calculated for He-Ar and Kr-Ar mixtures. The MET values fall within 10–15% of the experimental data at densities up to 11 mol · L−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503165
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Calculation of the mutual diffusion coefficient by equilibrium and nonequilibrium molecular dynamics (1986)
    Springer
    International journal of thermophysics 7 (1986), S. 305-317 
    Details
    ISSN: 1572-9567
    Keywords: hard spheres ; mixtures ; molecular dynamics ; Monte Carlo ; mutual diffusion ; time-correlation functions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A nonequilibrium molecular dynamics method for the calculation of the mutual diffusion coefficient for a mixture of hard spheres is described. The method is applied to a 50-50 mixture of equidiameter particles having a mass ratio of 0.1 for the two species, at a volume of three times close-packing. By extrapolating the results to the limit of vanishing concentration gradient and infinite system size, we obtain a value in statistical agreement with the result obtained using a Green-Kubo molecular dynamics procedure, which is also described. The non-equilibrium calculation yields a mutual diffusion coefficient which decreases slightly with increasing concentration gradient. The Green-Kubo timecorrelation function for mutual diffusion displays a slow decay with time, qualitatively similar to the long-time tail which has been predicted by the hydrodynamic theory of Pomeau.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00500157
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    Paper (German National Licenses)
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