Freely cooling granular gas
CLUSTERING IN A FREELY COOLING GRANULAR GAS
Snapshots and animations from an event-driven (ED) simulation
with N=99856 particles in 2D and periodic boundary conditions.
The system has volume fraction v=0.25 and it cools due to dissipation
so that 10 per-cent of the relative velocity is lost per collision,
i.e., the restitution coefficient is r=0.9.
IMAGE of the collision rate in the clustered regime (small 1.62 MB)
Remarks:
Red, green and blue correspond to large, medium and small values, respectively.
ANIMATION of the collision rate (small 2.62 MB)
ANIMATION of energy, collision rate and diffusion/mixing (XLARGE 102.0 MB)
Reference (additional reading):
S. Luding, Structure and cluster formation in granular media
Pramana-J. of Phys. 64(6), 893-902, 2005,
[
gzipped ps file ] or
[
PDF file ] or
[
journal-format PDF (access restriction) ].
