Microscopic foundation of the $\mu$(I) rheology for dense granular flows on inclined planes.
Language
en
Article de revue
This item was published in
Physical Review Research. 2023, vol. 5, n° 1, p. 013089
American Physical Society
English Abstract
Macroscopic and microscopic properties of dense granular layers flowing down inclined planes are obtained from Discrete-Element-Method simulations for both frictionless and frictional grains. Three fundamental observations ...Read more >
Macroscopic and microscopic properties of dense granular layers flowing down inclined planes are obtained from Discrete-Element-Method simulations for both frictionless and frictional grains. Three fundamental observations for dense granular flows are recovered, namely the occurrence of a critical stress, the Bagnold velocity profile, as well as well-defined friction and dilatancy laws. The microscopic aspects of the grain motion highlight the formation of transient clusters. From this microscopic picture, we derive a theoretical scaling model without any empirical input that explains quantitatively the fundamental laws of dense granular flows in incline plane and shear geometries. The adequacy between the model and the observed results suggests that granular flows can be viewed as flows from thermal fluids of hard spheres.Read less <
ANR Project
Mouvement brownien au voisinage d'interfaces molles - ANR-21-ERCC-0010
Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Frottements dans les systèmes complexes - ANR-21-CE06-0039
Capteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
Frottements dans les systèmes complexes - ANR-21-CE06-0039
Origin
Hal imported