Dynamics of Axial Separation in Long Rotating Drums

Journal Article · Tue Jun 01 04:00:00 EDT 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.82.4643· OSTI ID:345436

Aranson, I S ^[1]; Tsimring, L S ^[2]

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1. Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)
2. Institute for Nonlinear Science, University of California, San Diego, La Jolla, California 92093-0402 (United States)

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 ultraslow logarithmic coarsening. {copyright} {ital 1999} {ital The American Physical Society}

• DOE Contract Number: FG03-95ER14516; FG03-96ER14592; W-31109-ENG-38
• OSTI ID: 345436
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 82; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
GRANULAR MATERIALS
ROTATION
SEGREGATION
WAVE PROPAGATION