منابع مشابه
Primary electroviscous effect in a suspension of charged porous spheres.
Primary electroviscous effect for a dilute suspension of porous spheres with fixed volumetric charge density is investigated theoretically. In the absence of flow, the electrical potential and solution charge density are assumed to satisfy the linearized Poisson-Boltzmann equation. With incorporation of the electrical body force, the Brinkman equation and the Stokes equation are used to govern ...
متن کاملMicrostructure in a settling suspension of hard spheres.
We report direct observations of the structure factor in a settling suspension, using numerical simulations based on a lattice-Boltzmann model of the fluid. We find that the horizontal density fluctuations in bounded suspensions are strongly suppressed by the settling process, vanishing as k(2) at long wavelengths. Our measurements of the structure factor confirm the qualitative predictions of ...
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2014 We present experimental investigations of two-dimensional crystallization of calibrated Brownian spheres in water. The interaction monitored by an external AC electric field is attractive in a wide range of frequency and leads to a clustering of fractal crystallites. The fractal dimension of the structure is measured to be D = 1.74 ± 0.05 in good agreement with the theory of dynamical clus...
متن کاملOn the contribution of direct intermacromolecular interactions to the viscosity of a suspension of hard spheres
The contribution of the contact interaction to the shear and bulk viscosities 1) and 1), of a suspension of hard spheres is evaluated by use of the Green-Kubo integral forms. To lowest (second) order in the volume fraction . 1) = 1)0(\ + 13.442) and 1), = 1),0(\ + 4.321)02). Since [J. Chern. Phys. 67. 4690 (\ 977)] direct interactions contribute to the drag coefficient f in first order...
متن کاملKinetic description for a suspension of inelastic spheres - Boltzmann and BGK equations
The problem of a two-phase dispersed medium is studied within the kinetic theory. In the case of small and undeformable spheres that have all the same radius, a model for the collision operator of the Boltzmann equation is proposed. The collisions are supposed instantaneous, binary and inelastic. The obtained collision operator allows, to prove the existence of an H theorem in several configura...
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ژورنال
عنوان ژورنال: Proceedings of the American Mathematical Society
سال: 1969
ISSN: 0002-9939
DOI: 10.1090/s0002-9939-1969-0267591-8