Continuous Avalanche Segregation of Granular Mixtures in Thin Rotating Drums

Details Continuous Avalanche Segregation of Granular Mixtures in Thin Rotating Drums Continuous Avalanche Segregation of Granular Mixtures in Thin Rotating Drums

1998-09-30

arxiv.org/abs/cond-mat/9809422v2

Phys. Rev. Lett. 83, 3186 (1999)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures, http://polymer.bu.edu/~hmakse

Scientific paper

10.1103/PhysRevLett.83.3186

We study segregation of granular mixtures in the continuous avalanche regime (for frequencies above ~ 1 rpm) in thin rotating drums using a continuum theory for surface flows of grains. The theory predicts profiles in agreement with experiments only when we consider a flux dependent velocity of flowing grains. We find the segregation of species of different size and surface properties, with the smallest and roughest grains being found preferentially at the center of the drum. For a wide difference between the species we find a complete segregation in agreement with experiments. In addition, we predict a transition to a smooth segregation regime - with an power-law decay of the concentrations as a function of radial coordinate - as the size ratio between the grains is decreased towards one.

Affiliated with

Also associated with

No associations

Rating

Continuous Avalanche Segregation of Granular Mixtures in Thin Rotating Drums does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Continuous Avalanche Segregation of Granular Mixtures in Thin Rotating Drums, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous Avalanche Segregation of Granular Mixtures in Thin Rotating Drums will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-692687