Segregation in dense, dry, inclined flows of binary mixtures of grains

Abstract

We phrase and solve a problem of particle segregation in a dry flow of a binary mixture of spheres down an inclined bed in a wide channel. The flow is assumed to be steady and fully-developed, collisions between particles are dissipative, and the sizes and masses of the particles are not too different. We restrict our analysis to dense flows and use an extension of kinetic theory to predict the profiles of one concentration fraction in a mixture of spheres with different sizes made of the same material. We compare the predictions to the results of numerical simulations. © 2013 AIP Publishing LLC.