NMRI study: asial migration of radially segregated core of granular mixtures in a horizontal rotating cylinder

In this study, we use NMRI (nuclear magnetic resonance imaging) to non-invasively study the three-dimensional evolution of a segregation phenomenon which occurs in a simple geometry, a long horizontal cylindrical drum or a kiln. We show, for the first time, in a binary size mixture of spheres, the development of a radial core of small particles along the axis of the cylinder which evolves to axially segregated bands.