Granular flow down an inclined plane: Bagnold scaling and rheology. Export

@article{silbert2001, abstract = {We have performed a systematic, large-scale simulation study of granular media in two and three dimensions, investigating the rheology of cohesionless granular particles in inclined plane geometries, i.e., chute flows. We find that over a wide range of parameter space of interaction coefficients and inclination angles, a steady-state flow regime exists in which the energy input from gravity balances that dissipated from friction and inelastic collisions. In this regime, the bulk packing fraction (away from the top free surface and the bottom plate boundary) remains constant as a function of depth z, of the pile. The velocity profile in the direction of flow vx(z) scales with height of the pile H, according to vx(z) proportional to H(alpha), with alpha=1.52+/-0.05. However, the behavior of the normal stresses indicates that existing simple theories of granular flow do not capture all of the features evidenced in the simulations.}, address = {Sandia National Laboratories, Albuquerque, New Mexico 87185, USA.}, author = {Silbert, L. E. and Erta\c{s}, D. and Grest, G. S. and Halsey, T. C. and Levine, D. and Plimpton, S. J.}, citeulike-article-id = {2477348}, citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/11735913}, citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=11735913}, issn = {1539-3755}, journal = {Phys Rev E Stat Nonlin Soft Matter Phys}, keywords = {chute\_flow, granular, granular\_flow, incline}, month = {November}, number = {5 Pt 1}, posted-at = {2008-03-06 06:30:25}, priority = {2}, title = {Granular flow down an inclined plane: Bagnold scaling and rheology.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/11735913}, volume = {64}, year = {2001} }

TY - JOUR ID - silbert2001 L3 - citeulike-article-id:2477348 N2 - We have performed a systematic, large-scale simulation study of granular media in two and three dimensions, investigating the rheology of cohesionless granular particles in inclined plane geometries, i.e., chute flows. We find that over a wide range of parameter space of interaction coefficients and inclination angles, a steady-state flow regime exists in which the energy input from gravity balances that dissipated from friction and inelastic collisions. In this regime, the bulk packing fraction (away from the top free surface and the bottom plate boundary) remains constant as a function of depth z, of the pile. The velocity profile in the direction of flow vx(z) scales with height of the pile H, according to vx(z) proportional to H(alpha), with alpha=1.52+/-0.05. However, the behavior of the normal stresses indicates that existing simple theories of granular flow do not capture all of the features evidenced in the simulations. IS - 5 Pt 1 JF - Phys Rev E Stat Nonlin Soft Matter Phys SN - 1539-3755 AD - Sandia National Laboratories, Albuquerque, New Mexico 87185, USA. TI - Granular flow down an inclined plane: Bagnold scaling and rheology. VL - 64 KW - chute_flow KW - granular KW - granular_flow KW - incline AU - Silbert, LE AU - Ertaş, D AU - Grest, GS AU - Halsey, TC AU - Levine, D AU - Plimpton, SJ PY - 2001/11// UR - http://view.ncbi.nlm.nih.gov/pubmed/11735913 ER -