189 citations · 935 across the 41 of their papers we have counts for
4 papers · 1 filter
Modified Archimedes' principle predicts rising and sinking of intruders in sheared granular flows
Lu Jing, Julio M. Ottino, Richard M. Lueptow +1
We computationally determine the force on single spherical intruder particles in sheared granular flows as a function of particle size, particle density, shear rate, overburden pre…
Segregation models for density-bidisperse granular flows
Yifei Duan, Paul B. Umbanhowar, Julio M. Ottino +1
Individual constituent balance equations are often used to derive expressions for species-specific segregation velocities in flows of dense granular mixtures. We propose a semiempi…
Identifying Invariant Ergodic Subsets and Barriers to Mixing by Cutting and Shuffling: Study in a Bi-rotated Hemisphere
Thomas F. Lynn, Julio M. Ottino, Paul B. Umbanhowar +1
Mixing by cutting-and-shuffling can be mathematically described by the dynamics of piecewise isometries (PWIs), higher dimensional analogs of one-dimensional interval exchange tran…
Pattern formation in a fully-3D segregating granular flow
Mengqi Yu, Paul B. Umbanhowar, Julio M. Ottino +1
Segregation patterns of size-bidisperse particle mixtures in a fully-three-dimensional flow produced by alternately rotating a spherical tumbler about two perpendicular axes are st…