Spatial force correlations in granular shear flow. I. Numerical evidence

by: Gregg Lois, Anaël Lemaître, Jean M Carlson

Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 76, No. 2. (2007)

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We investigate the emergence of correlations in granular shear flow. By increasing the density of a simulated granular flow, we observe a transition from a dilute regime, where interactions are dominated by binary collisions, to a dense regime characterized by large force networks and collective motions. With increasing density, interacting grains tend to form networks of simultaneous contacts due to the dissipative nature of collisions. We quantify the size of these networks by measuring two-point force correlations and find dramatic changes in the statistics of contact forces as the size of the networks increases.

@article{citeulike:2881064, abstract = {We investigate the emergence of correlations in granular shear flow. By increasing the density of a simulated granular flow, we observe a transition from a dilute regime, where interactions are dominated by binary collisions, to a dense regime characterized by large force networks and collective motions. With increasing density, interacting grains tend to form networks of simultaneous contacts due to the dissipative nature of collisions. We quantify the size of these networks by measuring two-point force correlations and find dramatic changes in the statistics of contact forces as the size of the networks increases.}, author = {Lois, Gregg and Lema\^{i}tre, Ana\"el and Carlson, Jean M. }, citeulike-article-id = {2881064}, doi = {10.1103/PhysRevE.76.021302}, journal = {Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)}, keywords = {2007, correlation, force, grains, heterogeneity, pre, shear, simulation}, number = {2}, posted-at = {2008-06-11 00:41:19}, priority = {2}, publisher = {APS}, title = {Spatial force correlations in granular shear flow. I. Numerical evidence}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PLEEE8000076000002021302000001\&idtype=cvips\&gifs=yes}, volume = {76}, year = {2007} }

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TY - JOUR ID - citeulike:2881064 L3 - citeulike-article-id:2881064 TI - Spatial force correlations in granular shear flow. I. Numerical evidence JF - Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) VL - 76 IS - 2 PB - APS N2 - We investigate the emergence of correlations in granular shear flow. By increasing the density of a simulated granular flow, we observe a transition from a dilute regime, where interactions are dominated by binary collisions, to a dense regime characterized by large force networks and collective motions. With increasing density, interacting grains tend to form networks of simultaneous contacts due to the dissipative nature of collisions. We quantify the size of these networks by measuring two-point force correlations and find dramatic changes in the statistics of contact forces as the size of the networks increases. KW - 2007 KW - correlation KW - force KW - grains KW - heterogeneity KW - pre KW - shear KW - simulation AU - Lois, Gregg AU - Lema\^{i}tre, Ana\"el AU - Carlson, Jean PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLEEE8000076000002021302000001&idtype=cvips&gifs=yes ER -

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