Asymmetric concentration dependence of segregation fluxes in granular flows

  title={Asymmetric concentration dependence of segregation fluxes in granular flows},
  author={Ryan P. Jones and Austin B. Isner and Hongyi Xiao and Julio M. Ottino and Paul B. Umbanhowar and Richard M. Lueptow},
  journal={Physical Review Fluids},
We characterize the local concentration dependence of segregation velocity and segregation flux in both size and density bidisperse gravity-driven free-surface granular flows as a function of the particle size ratio and density ratio, respectively, using discrete element method (DEM) simulations. For a range of particle size ratios and inlet volume flow rates in size-bidisperse flows, the maximum segregation flux occurs at a small particle concentration less than 0.5, which decreases with… 
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