Segregation of charged particles under shear

摘要: We study segregation of a binary mixture differently charged particles under shear using particle-based simulations. simulate particle dynamics discrete-element model including electrostatic interactions and find that segregate according to their net charge. Particles are twice as strong other the same electrical sign seen more at insulating boundaries with which we system. Weakly particles, on hand, stay in center sheared bed. To understand this segregation, propose simple based potential energy, shows segregated system observe our simulations is indeed most favorable configuration. Our further show for given packing fraction simulation time there an optimal velocity where maximal. maximum results from competition between diffusional Coulomb fluxes. For larger velocity, diffusion suppresses proportional fluctuation velocity.