Quantitative study of a freely cooling granular medium
Pierre Deltour, Jean-Louis Barrat
TL;DR
This paper numerically investigates the cooling behavior of a 2D granular medium, observing instabilities that align with hydrodynamic theory predictions, providing insights into granular dynamics.
Contribution
It offers a detailed numerical analysis of instabilities in a cooling granular medium, confirming theoretical predictions with quantitative agreement.
Findings
Identification of shearing and clustering instabilities
Quantitative agreement with hydrodynamic theory
Insights into granular medium cooling dynamics
Abstract
We present a numerical study of a two dimensional granular medium consisting of hard inelastic disks. The evolution of the medium throughout a cooling process is monitored. Two different types of instabilities (shearing and clustering instability) are found to develop in the system. The development of these instabilities is shown to be in qualitative and quantitative agreement with the predictions of linearized hydrodynamic theory.
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