Event-driven simulation of a simple model for dense suspension flow

Details Event-driven simulation of a simple model for dense suspension flow Event-driven simulation of a simple model for dense suspension flow

2011-11-30

arxiv.org/abs/1111.7225v1

Physics

Condensed Matter

Soft Condensed Matter

20 pages, 8 figures, submitted to the Journal of Computational Physics

Scientific paper

We introduce an event-driven simulation scheme for a simplified model of dense suspensions under flow. In this model, hydrodynamic interactions are neglected. The viscous drag force exerted on a particle is proportional to the difference between the fixed velocity of the underlying fluid, and the velocity of the particle. Our event-driven approach is based on an exactly-derivable equation of motion which depends solely on geometric information. Our method allows for a robust extraction of the instantaneous coordination of the particles as well as contact-forces statistics and dynamics, under any chosen mode of deformation. It can also be used for generating jammed packings under shear or compression.

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