Traveling Granular Segregation Patterns in a Long Drum Mixer Export

@article{choo97, 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: bidirectional traveling waves. By preparing initial conditions; we found that the wave speed decreased with wavelength. Such waves appear to be inconsistent with simple partial differential equation models which are first order in time.}, author = {Choo, Kiam and Molteno, T. C. A. and Morris, Stephen W.}, citeulike-article-id = {4958441}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRevLett.79.2975}, citeulike-linkout-1 = {http://link.aps.org/abstract/PRL/v79/i16/p2975_1}, citeulike-linkout-2 = {http://link.aps.org/pdf/PRL/v79/i16/p2975_1}, doi = {10.1103/PhysRevLett.79.2975}, journal = {Physical Review Letters}, keywords = {drum, granular}, month = {Oct}, number = {16}, pages = {2975--2978}, posted-at = {2009-06-25 16:19:33}, priority = {2}, publisher = {American Physical Society}, title = {Traveling Granular Segregation Patterns in a Long Drum Mixer}, url = {http://dx.doi.org/10.1103/PhysRevLett.79.2975}, volume = {79}, year = {1997} }

TY - JOUR ID - choo97 L3 - citeulike-article-id:4958441 N2 - 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: bidirectional traveling waves. By preparing initial conditions; we found that the wave speed decreased with wavelength. Such waves appear to be inconsistent with simple partial differential equation models which are first order in time. IS - 16 JF - Physical Review Letters EP - 2978 TI - Traveling Granular Segregation Patterns in a Long Drum Mixer PB - American Physical Society VL - 79 SP - 2975 KW - drum KW - granular AU - Choo, Kiam AU - Molteno, TCA AU - Morris, Stephen PY - 1997/Oct// UR - http://dx.doi.org/10.1103/PhysRevLett.79.2975 ER -