Particle-based numerical modeling of a thin granular layer subjected to oscillating flow

•Nonlinear waves.•Front dynamics.•Granular beds. Self-organization is observed in granular systems under permanent energy injection. Various aspects of this phenomena have been characterized in experimental studies, however, due to the partial access to the evolution of granular media, numerous deta...

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Bibliographic Details
Published in:Communications in nonlinear science & numerical simulation 2021-06, Vol.97, p.105770, Article 105770
Main Authors: Crespin, B., Clerc, M.G., Jara-Schulz, G., Kowalczyk, M.
Format: Article
Language:English
Subjects:
Air flow
Computer Science
Domain walls
Dynamic structural analysis
Granular materials
Granular media
Granular systems
Heat transfer
Mathematical models
Modeling and Simulation
Numerical analysis
Numerical simulations
Oscillating flow
Oscillators
Phase diagrams
Phase transitions
Qualitative analysis
Self-organizations
Standing waves
Two dimensional models
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Summary:•Nonlinear waves.•Front dynamics.•Granular beds. Self-organization is observed in granular systems under permanent energy injection. Various aspects of this phenomena have been characterized in experimental studies, however, due to the partial access to the evolution of granular media, numerous details of this self-organization process are unknown. Here, we investigate a simple, particle-based model that captures the dynamics of a quasi-two-dimensional shallow granular layer subjected to an air flow oscillating in time. Based on the numerical simulations, we characterize the phase diagram, structure and dynamics of domain walls, attractive standing waves, and reveal the origin of their wavelength. Our findings present a quite fair qualitative agreement with experimental observations.
ISSN:1007-5704
1878-7274
DOI:10.1016/j.cnsns.2021.105770