A study of viscosity inhomogeneity in porous media

Akhmatskaya, E.; Todd, B.D.
March 1997
Journal of Chemical Physics;3/15/1997, Vol. 106 Issue 11, p4684
Academic Journal
Studies the viscosity of Weeks-Chandler-Andersen fluids confined in narrow split pores using the nonequilibrium molecular dynamics technique and the application of the theory of transport in highly inhomogenous systems. Equilibrium and nonequilibrium density profiles; Equilibrium pair correlation functions; Flow velocity profiles; Variations of viscosity with position across the pore.


Related Articles

  • Weighted-density approximations for homogeneous binary fluids. Jo, Sang Gyu; Kim, Soon-Chul // Journal of Chemical Physics;12/8/1996, Vol. 105 Issue 22, p10156 

    Weighted-density approximations (WDAs) for the binary mixtures, which are based on the position-independent densities, are considered. Homogeneous properties of these approximations are investigated. We show that the WDA’s based on the position-independent densities lead to the...

  • A fundamental-measure theory for inhomogeneous associating fluids. Yu, Yang-Xin; Wu, Jianzhong // Journal of Chemical Physics;4/22/2002, Vol. 116 Issue 16, p7094 

    The fundamental-measure theory (FMT) of Rosenfeld for hard spheres is extended to inhomogeneous associating fluids on the basis of Wertheim’s first-order thermodynamic perturbation theory (TPT1). The excess intrinsic Helmholtz energy, which includes contributions from hard-sphere...

  • Spherically inhomogeneous fluids. I. Percus–Yevick hard spheres: Osmotic coefficients and triplet correlations. Attard, Phil // Journal of Chemical Physics;9/1/1989, Vol. 91 Issue 5, p3072 

    For fluids in a spherically symmetric external field, it is shown that the Ornstein–Zernike convolution integral becomes a simple algebraic equation upon Legendre transformation. Applying the usual closure relations, the full inhomogeneous pair correlation functions become available. A...

  • Structure of an inhomogeneous fluid mixture: A new weighted density-functional theory within a perturbative approach. Choudhury, Niharendu; Ghosh, Swapan K. // Journal of Chemical Physics;1/15/2003, Vol. 118 Issue 3, p1327 

    A simple density-functional approach is developed for an inhomogeneous fluid mixture where the functional Taylor expansion of the perturbative approach has been used along with a nonperturbative weighted density prescription. The functional Taylor expansion of the one-particle direct correlation...

  • Sticky spheres in adhesive pores. Jamnik, A. // Journal of Chemical Physics;4/8/1995, Vol. 102 Issue 14, p5811 

    The structure of Baxter’s adhesive fluid [R. J. Baxter, J. Chem. Phys. 49, 2770 (1968)] in planar pores with adsorbing walls maintaining the equilibrium with the bulk fluid is considered. The wall–fluid correlations are studied on the basis of the solution to the...

  • Predicting the Newtonian viscosity of complex fluids from high strain rate molecular simulations. McCabe, Clare; Manke, Charles W.; Cummings, Peter T. // Journal of Chemical Physics;2/22/2002, Vol. 116 Issue 8, p3339 

    The prediction of viscosity by molecular simulation has been a goal of molecular modeling essentially since its inception. With today's computing power, the Newtonian or zero shear viscosity of a low molecular weight fluid can easily be determined using equilibrium and nonequilibrium molecular...

  • Relationship between free energy density functional, Born–Green–Yvon, and potential distribution approaches for inhomogeneous fluids. Fischer, Johann; Heinbuch, Uwe // Journal of Chemical Physics;2/1/1988, Vol. 88 Issue 3, p1909 

    For hard spheres in an external field it is shown that free energy density functionals of the type suggested by Percus [J. Chem. Phys. 75, 1316 (1981)] lead to certain approximations to the Born–Green–Yvon equation. For two functionals these approximations are worked out explicitly...

  • Relation between Born–Green–Yvon solutions and chemical potential for a fluid inside a pore. Sokolowski, S.; Fischer, J. // Journal of Chemical Physics;11/1/1990, Vol. 93 Issue 9, p6787 

    Limiting values of the one-particle background correlation function for inhomogeneous fluids are considered and used as boundary values for the integration of the Born–Green–Yvon equation. For a system of hard spheres in contact with a hard wall different approximations of the pair...

  • Structure of inhomogeneous dipolar fluids: A density functional approach. Patra, Chandra N.; Ghosh, Swapan K. // Journal of Chemical Physics;2/15/1997, Vol. 106 Issue 7, p2752 

    Presents a density functional approach to the study of the structure of inhomogeneous dipolar fluids consisting of dipolar hard spheres in the presence of external electric fields. Effect of short-range and long-range hard sphere-like correlations; Nonuniform density expanded in terms of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics