413 citations · 2k across the 45 of their papers we have counts for
5 papers · 1 filter
Asymmetric concentration dependence of segregation fluxes in granular flows
Ryan P. Jones, Austin B. Isner, Hongyi Xiao +3
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…
Transient response in granular quasi-2D bounded heap flow
Hongyi Xiao, Julio M. Ottino, Richard M. Lueptow +1
We study the transition between steady flows of non-cohesive granular materials in quasi-2D bounded heaps by suddenly changing the feed rate. In both experiments and simulations, t…
Modeling size segregation of granular materials: the roles of segregation, advection and diffusion
Yi Fan, Conor P. Schlick, Paul B. Umbanhowar +2
Predicting segregation of granular materials composed of different-sized particles is a challenging problem. In this paper, we develop and implement a theoretical model that captur…
Ripples and Shear Bands in Plowed Granular Media
Nick Gravish, Paul Umbanhowar, Daniel I. Goldman
Monodisperse packings of dry, air-fluidized granular media typically exist between volume fractions from = 0.585 to 0.64. We demonstrate that the dynamics of granular drag are s…
Forcing function control of Faraday wave instabilities in viscous shallow fluids
Cristian Huepe, Yu Ding, Paul Umbanhowar +1
We investigate the relationship between the linear surface wave instabilities of a shallow viscous fluid layer and the shape of the periodic, parametric-forcing function (describin…