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Transit time during the interparticle percolation process.

Franck Lominé¹, Luc Oger

¹Research Institute of Civil Engineering and Mechanics, UMR CNRS 6183, University of Nantes, 58 rue Michel Ange, BP 420-44606, Saint-Nazaire, Cedex, France. franck.lomine@univ-nantes.fr

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|January 15, 2011

Summary

This summary is machine-generated.

This study numerically investigates particle jamming during percolation through porous media. Results show how transit time evolves with the volume occupied by percolating particles.

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Area of Science:

Physics
Materials Science
Chemical Engineering

Background:

Understanding particle flow through porous media is crucial for various industrial processes.
The jamming effect, where particles obstruct flow, is a key phenomenon in granular materials.
Previous studies often focused on different size ratios or media types.

Purpose of the Study:

To numerically investigate the jamming effect in spontaneous interparticle percolation.
To analyze particle rebounds and transit times through unconsolidated porous media.
To explore the influence of particle number, size ratio, and restitution coefficient on percolation dynamics.

Main Methods:

Discrete Element Method (DEM) simulations were employed.
The size ratio of beads was set above the geometrical trapping threshold (ξ = 6.464).
Simulations tracked particle trajectories, rebounds, and transit times.

Main Results:

The study analyzed the evolution of particle transit times.
Key parameters investigated included the number of injected particles, bead size ratio, and energy restitution coefficient.
A relationship was established between transit time and the contiguous volume occupied by percolating particles.

Conclusions:

The jamming effect significantly influences particle percolation dynamics.
Transit time is dependent on the interplay between particle properties and porous medium characteristics.
This research provides insights into granular flow and jamming phenomena in porous media.