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A PHENOMENOLOGICAL DESCRIPTION OF MIXING-SEGREGATION EFFECTS DURING SHEAR DEFORMATION OF PARTICULATE SOLIDS

The mixing–segregation kinetics in the course of shear flow of particulate solids at low shear rates is studied analytically and experimentally. The experimental research was carried out by the use of the conveyor shear cell developed previously [1]. The phenomenological description of the segregation–mixing dynamics during shear flow of nonelastic cohesionless rough spherical particles is suggested. Only one experimental constant (segregation coefficient) is used to forecast the segregation– mixing dynamics. The method of the segregation coefficient determination is developed.