The formation of flow patterns in liquid and granulated media is studied experimentally. Many phenomena such as segregation of particles different in dimensions, surface properties, and density are observed only in granulated media. However, there exist many effects typical of flows in both liquid and granulated media in a horizontal circular cylinder rotating about its axis. Eight classes of the following similar patterns in fluids and granulated mixtures were studied experimentally: vortex-like patterns, deformation of the trailing and leading edges of a layer, shark-teeth patterns, fish-like patterns, formation of rotating layers, ring-like patterns, and cellular patterns.
Bibliographical noteTranslated from Prikladnaya
Mekhanika, Vol. 37, No. 7, pp. 108–114, July 2001.