Dynamics of axial separation in long rotating drums

Details Dynamics of axial separation in long rotating drums Dynamics of axial separation in long rotating drums

1998-10-11

arxiv.org/abs/patt-sol/9810004v1

Nonlinear Sciences

Pattern Formation and Solitons

4 pages, 3 Postscript figures; submitted to PRL

Scientific paper

10.1103/PhysRevLett.82.4643

We propose a continuum description for the axial separation of granular
materials in a long rotating drum. The model, operating with two local
variables, concentration difference and the dynamic angle of repose, describes
both initial transient traveling wave dynamics and long-term segregation of the
binary mixture. Segregation proceeds through ultra-slow logarithmic coarsening.

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