DUMONT, Denis; BONNEAU, Haggai; SALEZ, Thomas; RAPHAËL, Elie; DAMMAN, Pascal

doi:10.1103/PhysRevResearch.5.013089

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

DUMONT, Denis

BONNEAU, Haggai
Gulliver (UMR 7083)

SALEZ, Thomas
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

Langue

Article de revue

Ce document a été publié dans

Physical Review Research. 2023, vol. 5, n° 1, p. 013089

American Physical Society

Résumé en anglais

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.< Réduire

DOI

http://dx.doi.org/10.1103/PhysRevResearch.5.013089

Project ANR

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

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798