How to impose stick boundary conditions in coarse-grained hydrodynamics of Brownian colloids and semi-flexible fiber rheology
arXiv:1201.5502 · doi:10.1063/1.3684752
Abstract
Long-range hydrodynamics between colloidal particles or fibers is modelled by the Fluid Particle Model. Two methods are considered to impose the fluid boundary conditions at colloidal surfaces. In the first method radial and transverse friction forces between particle and solvent are applied such that the correct friction and torque follows for moving or rotating particles. The force coefficients are calculated analytically and checked by numerical simulation. In the second method a collision rule is used between colloidal particle and solvent particle that imposes the stick boundary conditions exactly. The collision rule comprises a generalisation of the Lowe-Anderson thermostat to radial and transverse velocity differences.
15 pages, 9 figures, accepted for publication in the Journal of Chemical Physics
References in corpus (12)
- Numerical Simulations of Particulate Suspensions via a Discretized Boltzmann Equation Part II. Numerical Results
- Diamondoid Molecules
- Close packing density of polydisperse hard spheres
- A fluid particle model
- How would you integrate the equations of motion in dissipative particle dynamics simulations?
- Fokker-Planck-Boltzmann Equation for Dissipative Particle Dynamics
- From Molecular Dynamics to hydrodynamics - a novel Galilean invariant thermostat
- Current Distribution in the Three-Dimensional Random Resistor Network at the Percolation Threshold
- Role of cross-links in bundle formation, phase separation and gelation of long filaments
- Mesoscopic model for colloidal particles, powders and granular solids
- Close packing density and fracture strength of adsorbed polydisperse particle layers
- A Brownian dynamics algorithm for entangled wormlike threads
Cited by in corpus (4)
- Perspective: Dissipative Particle Dynamics
- A fast platform for simulating flexible fiber suspensions applied to cell mechanics
- Mesoscale simulation of semiflexible chains. II. Evolution dynamics and stability of fiber bundle networks
- Mesoscale simulation of semiflexible chains. I. Endpoint distribution and chain dynamics