Traveling Granular Segregation Patterns in a Long Drum Mixer
Kiam Choo, T. C. A. Molteno, Stephen W. Morris
Abstract
Mixtures of granular media often exhibit size segregation along the axis of a partially-filled, horizontal, rotating cylinder. Previous experiments have observed axial bands of segregation that grow from concentration fluctuations and merge in a manner analogous to spinodal decomposition. We have observed that a new dynamical state precedes this effect in certain mixtures: bi-directional traveling waves. By preparing initial conditions, we found that the wave speed decreased with wavelength. Such waves appear to be inconsistent with simple PDE models which are first order in time.
Create a lesson
Related papers
Potential energy release rate for solids with bounded domains during evolutions involving changes to boundaries and boundary data
Mrityunjay Kothari, Sayaka Kochiyama, Haneesh Kesari
Arrested phase separation and amorphous patterns in charged binary fluids
Logan H. Grant, Ana Bensabat, Eva Pospivsilova et al.
Shear-driven arrest of dip-coating film entrainment
Theo Witkamp, Stéphane Zaleski, Federico Toschi
How Fluctuations Control Chiral Symmetry Breaking in Reacting Mixtures of Chiral Molecules
Leonardo Silva-Dias, Christoph A. Weber
A new device for live cell imaging of biological samples under in-plane shear
Sidharth Kumar Das, Lyova Mamoyan, Eberhard Bodenschatz et al.
Imbibition dynamics under dissolution-driven fluid thickening
H. W. Almeida, A. F. V. Matias, R. C. V. Coelho et al.