Flows of Dense Granular Media

by: Yoel Forterre, Olivier Pouliquen

Annual Review of Fluid Mechanics, Vol. 40, No. 1. (2008), pp. 1-24.

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Abstract

We review flows of dense cohesionless granular materials, with a special focus on the question of constitutive equations. We first discuss the existence of a dense flow regime characterized by enduring contacts. We then emphasize that dimensional analysis strongly constrains the relation between stresses and shear rates, and show that results from experiments and simulations in different configurations support a description in terms of a frictional visco-plastic constitutive law. We then discuss the successes and limitations of this empirical rheology in light of recent alternative theoretical approaches. Finally, we briefly present depth-averaged methods developed for free surface granular flows.

@article{Forterre2008, abstract = {We review flows of dense cohesionless granular materials, with a special focus on the question of constitutive equations. We first discuss the existence of a dense flow regime characterized by enduring contacts. We then emphasize that dimensional analysis strongly constrains the relation between stresses and shear rates, and show that results from experiments and simulations in different configurations support a description in terms of a frictional visco-plastic constitutive law. We then discuss the successes and limitations of this empirical rheology in light of recent alternative theoretical approaches. Finally, we briefly present depth-averaged methods developed for free surface granular flows.}, author = {Forterre, Yoel and Pouliquen, Olivier }, citeulike-article-id = {2477160}, doi = {http://dx.doi.org/10.1146/annurev.fluid.40.111406.102142}, journal = {Annual Review of Fluid Mechanics}, keywords = {granular\_flow, qual, qualifier}, number = {1}, pages = {1--24}, posted-at = {2008-05-03 01:00:32}, priority = {2}, title = {Flows of Dense Granular Media}, url = {http://dx.doi.org/10.1146/annurev.fluid.40.111406.102142}, volume = {40}, year = {2008} }

RIS record

TY - JOUR ID - Forterre2008 L3 - citeulike-article-id:2477160 TI - Flows of Dense Granular Media JF - Annual Review of Fluid Mechanics VL - 40 IS - 1 SP - 1 EP - 24 N2 - We review flows of dense cohesionless granular materials, with a special focus on the question of constitutive equations. We first discuss the existence of a dense flow regime characterized by enduring contacts. We then emphasize that dimensional analysis strongly constrains the relation between stresses and shear rates, and show that results from experiments and simulations in different configurations support a description in terms of a frictional visco-plastic constitutive law. We then discuss the successes and limitations of this empirical rheology in light of recent alternative theoretical approaches. Finally, we briefly present depth-averaged methods developed for free surface granular flows. KW - granular_flow KW - qual KW - qualifier AU - Forterre, Yoel AU - Pouliquen, Olivier PY - 2008/// UR - http://dx.doi.org/10.1146/annurev.fluid.40.111406.102142 ER -

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