[Écoulements de milieux granulaires secs]
Le comportement d'assemblées denses de grains secs soumises à un cisaillement rapide est encore mal compris, et a fait récemment l'objet de nombreuses études expérimentales et de simulations numériques discrètes. Nous présentons les caractéristiques générales de tels écoulements tant à surface libre que confinés, ainsi que les information obtenues à l'échelle du réseau de contact. Nous décrivons ensuite les principaux modèles rhéologiques, ainsi que leurs prédictions.
The behavior of dense assemblies of dry grains submitted to continuous shear deformation is still not well understood. Recently it has been the subject of several experiments and discrete particle simulations. For both confined and free surface geometries, we present the general features of such flows as well as grain-level information. We then describe the main rheological models and their predictions.
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Mots-clés : milieux granulaires, hydrodynamique, rhologie
Olivier Pouliquen 1 ; François Chevoir 2
@article{CRPHYS_2002__3_2_163_0, author = {Olivier Pouliquen and Fran\c{c}ois Chevoir}, title = {Dense flows of dry granular material}, journal = {Comptes Rendus. Physique}, pages = {163--175}, publisher = {Elsevier}, volume = {3}, number = {2}, year = {2002}, doi = {10.1016/S1631-0705(02)01309-9}, language = {en}, }
Olivier Pouliquen; François Chevoir. Dense flows of dry granular material. Comptes Rendus. Physique, Volume 3 (2002) no. 2, pp. 163-175. doi : 10.1016/S1631-0705(02)01309-9. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/S1631-0705(02)01309-9/
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