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Droplet shape fluctuations in agitated emulsions—Beyond the dilute limit

Frenkel, Gad - In: Physica A: Statistical Mechanics and its Applications 427 (2015) C, pp. 251-261

that are obtained for this special case are damped relative to the deformation correlations in the dilute regime. The …

Persistent link: https://www.econbiz.de/10011209645

Transient settling of a dilute spherical suspension droplet at low Reynolds number

Felderhof, B.U. - In: Physica A: Statistical Mechanics and its Applications 387 (2008) 24, pp. 5991-5998

The transient settling in a viscous incompressible fluid of a spherical dilute cloud of particles starting from rest under the influence of a small constant applied force is studied in a continuum model on the basis of the linearized Navier–Stokes equations. Explicit expressions are derived...

Persistent link: https://www.econbiz.de/10010873849

Transport between a drifting and a non-drifting gas near the edge of a separating wall

Mohazzabi, Pirooz; Bernhardt, Mark D. - In: Physica A: Statistical Mechanics and its Applications 243 (1997) 1, pp. 37-46

Transport between a drifting and a non-drifting gas near the edge of a thin separating wall is investigated. Monte … Carlo simulations show that net transport of particles takes place predominantly near the edge of the wall. The effects of … drift velocity, proximity to the edge, Maxwellian speed distribution, and roughness of the wall are considered. …

Persistent link: https://www.econbiz.de/10010587400

Inertial effects in Brownian motion of a trapped particle in shear flow

Rzehak, R.; Zimmermann, W. - In: Physica A: Statistical Mechanics and its Applications 324 (2003) 3, pp. 495-508

The Brownian motion of a bound particle in shear flow is a basic problem in colloid and polymer science. Since the flow has a rotational component, the description cannot be cast in the usual equilibrium statistical mechanics framework of particle motion in a potential well. Instead, the...

Persistent link: https://www.econbiz.de/10010874831

Image representation of a spherical particle near a hard wall

Cichocki, B.; Jones, R.B. - In: Physica A: Statistical Mechanics and its Applications 258 (1998) 3, pp. 273-302

The motion of a spherical colloidal particle suspended in a moving fluid near a planar hard wall or free surface is … position and orientation of a hard sphere falling towards a wall under gravity in the presence of a shear flow. …

Persistent link: https://www.econbiz.de/10010871902

Multiple scales analysis of the Fokker–Planck equation for simple shear flow

Subramanian, G.; Brady, J.F. - In: Physica A: Statistical Mechanics and its Applications 334 (2004) 3, pp. 343-384

We extend the multiple time scales formalism originally introduced for the Fokker–Planck equation by Wycoff and Balazs (Physica A 146 (1987) 175) to the case of simple shear flow. The analysis is carried out for small values of the Stokes number, St, a dimensionless measure of the inertia of a...

Persistent link: https://www.econbiz.de/10010872048

Structure of a tethered polymer under flow using molecular dynamics and hybrid molecular-continuum simulations

Delgado-Buscalioni, Rafael; Coveney, Peter V. - In: Physica A: Statistical Mechanics and its Applications 362 (2006) 1, pp. 30-35

potential. The solvent (modelled as a LJ fluid) and a weakly attractive wall are treated at the molecular level. At large shear … rates the polymer becomes more elongated than predicted by existing theoretical scaling laws. Also, along the normal-to-wall …. Comparison with previous Brownian dynamics simulations (which exclude both solvent and wall potential) indicates that these …

Persistent link: https://www.econbiz.de/10010591122

Driven steady states: rules for transition rates

Evans, R.M.L. - In: Physica A: Statistical Mechanics and its Applications 340 (2004) 1, pp. 364-372

It is well known that transition rates in a canonical ensemble should respect the principle of detailed balance. What are the equivalent constraints that apply in non-equilibrium steady states, implied by maximization of information-entropy? The exact theorem for the non-equilibrium rates yields...

Persistent link: https://www.econbiz.de/10010591296

Chaotic and regular shear-induced orientational dynamics of nematic liquid crystals

Rienäcker, G.; Kröger, M.; Hess, S. - In: Physica A: Statistical Mechanics and its Applications 315 (2002) 3, pp. 537-568

Based on a relaxation equation for the alignment tensor characterizing the molecular orientation in liquid crystals under flow we present results for the full orientational dynamics of homogeneous liquid crystals in a shear flow. We extend the analysis of the symmetry-adapted states by...

Persistent link: https://www.econbiz.de/10011058283

Hydrodynamic modes of a three-dimensional sheared granular material

Kumaran, V. - In: Physica A: Statistical Mechanics and its Applications 293 (2001) 3, pp. 385-404

The hydrodynamic modes of a three-dimensional sheared granular flow are determined by solving the linearised Boltzmann equation. The steady state is determined using an expansion in the parameter ε=(1−e)1/2, and terms correct to O(ε4) are retained in the expansion. The distribution function...

Persistent link: https://www.econbiz.de/10011058481