Academic Journal
Relevance of visco-plastic theory in a multi-directional inhomogeneous granular flow
| العنوان: | Relevance of visco-plastic theory in a multi-directional inhomogeneous granular flow |
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| المؤلفون: | Cortet, Pierre-Philippe, Bonamy, Daniel, Daviaud, François, Dauchot, Olivier, Dubrulle, Bérengère, Renouf, Mathieu |
| المساهمون: | Service de physique de l'état condensé (SPEC - UMR3680), Institut Rayonnement Matière de Saclay (DRF) (IRAMIS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Service de Physique et de Chimie des Surfaces et Interfaces (SPCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Mécanique des Contacts et des Structures Villeurbanne (LaMCoS), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), This work was supported by the Triangle de la Physique and grant ANR TSF NT05-1-41492. |
| المصدر: | ISSN: 0295-5075. |
| بيانات النشر: | HAL CCSD European Physical Society / EDP Sciences / Società Italiana di Fisica / IOP Publishing |
| سنة النشر: | 2009 |
| المجموعة: | Université de Lyon: HAL |
| مصطلحات موضوعية: | PACS 45.70.-n – Granular systemsPACS 83.80.Fg – Granular solidsPACS 45.05.+x – General theory of classical mechanics of discrete systems, [PHYS]Physics [physics] |
| الوصف: | International audience ; We confront a recent visco-plastic description of dense granular flows (Jop P. et al., Nature, 441 (2006) 727) with multi-directional inhomogeneous steady flows observed in non-smooth contact dynamics simulations of 2D half-filled rotating drums. Special attention is paid to check separately the two underlying fundamental statements into which the considered theory can be recast, namely i) a single relation between the invariants of stress and strain rate tensors and ii) the alignment between these tensors. Interestingly, the first prediction is fairly well verified over more than four decades of small strain rate, from the surface rapid flow to the quasi-static creep phase, where it is usually believed to fail because of jamming. On the other hand, the alignment between stress and strain rate tensors is shown to fail over the whole flow, what yields an apparent violation of the visco-plastic rheology when applied without care. In the quasi-static phase, the particularly large misalignment is conjectured to be related to transient dilatancy effects. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | cea-01373382; https://cea.hal.science/cea-01373382; https://cea.hal.science/cea-01373382/document; https://cea.hal.science/cea-01373382/file/epl_granulaire.pdf |
| DOI: | 10.1209/0295-5075/88/14001 |
| الاتاحة: | https://cea.hal.science/cea-01373382 https://cea.hal.science/cea-01373382/document https://cea.hal.science/cea-01373382/file/epl_granulaire.pdf https://doi.org/10.1209/0295-5075/88/14001 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.6A4D49E0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1209/0295-5075/88/14001 |
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