Evolution of wet agglomerates inside inertial shear flow of dry granular materials
| Autor: | Saeid Nezamabadi, Patrick Mutabaruka, Thanh-Trung Vo, Jean-Yves Delenne, Farhang Radjai |
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| Přispěvatelé: | Danang Architecture University (DAU), Physique et Mécanique des Milieux Divisés (PMMD), Laboratoire de Mécanique et Génie Civil (LMGC), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Ministry of Education and Training in Vietnam, Campus France, ANR-10-LABX-0020,NUMEV,Digital and Hardware Solutions and Modeling for the Environement and Life Sciences(2010) |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Capillary action Structure granulaire Mechanics Granular material 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Shear rate Surface tension Shear (geology) Agglomerate [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] 0103 physical sciences Simulation numérique 3D Astrophysics::Earth and Planetary Astrophysics [PHYS.MECA.BIOM]Physics [physics]/Mechanics [physics]/Biomechanics [physics.med-ph] 010306 general physics Shear flow Scaling |
| Zdroj: | Physical Review E (2470-0045) (American Physical Society (APS)), 2020-03, Vol. 101, N. 3, P. 032906 (10p.) Physical Review E Physical Review E, American Physical Society (APS), 2020, 101 (3), ⟨10.1103/PhysRevE.101.032906⟩ |
| ISSN: | 2470-0053 2470-0045 |
| DOI: | 10.1103/PhysRevE.101.032906⟩ |
| Popis: | International audience; We use particle dynamics simulations to investigate the evolution of a wet agglomerate inside homogeneous shear flows of dry particles. The agglomerate is modeled by introducing approximate analytical expressions of capillary and viscous forces between particles in addition to frictional contacts. During shear flow, the agglomerate may elongate, break, or be eroded by loss of its capillary bonds and primary particles. By systematically varying the shear rate and surface tension of the binding liquid, we characterize the rates of these dispersion modes. All the rates increase with increasing inertial number of the flow and decreasing cohesion index of the agglomerate. We show that the data points for each mode collapse on a master curve for a dimensionless scaling parameter that combines the inertial number and the cohesion index. The erosion rate vanishes below a cutoff value of the scaling parameter. This leads to a power-law borderline between the vanishing erosion states and erosion states in the phase space defined by the inertial number and the cohesion index. |
| Databáze: | OpenAIRE |
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