| Title: |
Experimental study of particle impact on cohesive granular packing |
| Authors: |
Selmani, H.; Besnard, Jean-Baptiste; Moctar, Ahmed, Ould El; Dupont, Pascal; Valance, Alexandre |
| Contributors: |
Université Ferhat-Abbas Sétif 1 Sétif (UFAS1); Laboratoire de Thermique et d’Energie de Nantes (LTeN); Centre National de la Recherche Scientifique (CNRS)-Nantes Université - Ecole Polytechnique de l'Université de Nantes (Nantes Univ - EPUN); Nantes Université - pôle Sciences et technologie; Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie; Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ); Laboratoire de Génie Civil et Génie Mécanique (LGCGM); Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes); Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA); Institut de Physique de Rennes (IPR); Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS); ANR-21-CE30-0066,EOLE,Transport éolien de particules cohésives: du sable à la neige(2021) |
| Source: |
ISSN: 2470-0045. |
| Publisher Information: |
CCSD; American Physical Society (APS) |
| Publication Year: |
2024 |
| Collection: |
Université de Nantes: HAL-UNIV-NANTES |
| Subject Terms: |
Granular materials; Packing; Critical impact velocity; Ejection process; Granular Packings; Impact process; Impact velocities; Liquid contents; Oil mixtures; Particles impacts; Sand particles; Cohesive strength; Particles (particulate matter); [PHYS.MECA]Physics [physics]/Mechanics [physics]; [PHYS]Physics [physics] |
| Description: |
International audience ; We investigate experimentally the impact process of sand particles onto a cohesive granular packing made of similar particles. We use a sand-oil mixture with varying liquid content to tune the cohesive strength of the packing. The outcome of the impact is analyzed in terms of the production of ejected particles from the packing. We quantify this production as a function of the impact velocity of the particles for increasing cohesion strength. We identified three different regimes depending on the cohesion number Co, defined as the ratio of the interparticle cohesive force to the particle weight. For small cohesion (i.e., Co ⪅ 1 ), the ejection process is not modified by the cohesion. For intermediate cohesion (i.e., 1 ⪅ Co ⪅ 20 ), the ejection process becomes less efficient: the number of ejected particles per impact for a given impact velocity is decreased but the critical impact velocity to trigger the ejection process remains unchanged. Finally, for strong cohesion (i.e., Co ⪆ 20 ), we observed a progressive increase of the critical impact velocity. These experimental results confirm spectacularly the outcomes of recent numerical simulations on the collision process of a particle onto a cohesive packing and open avenues to model the aeolian transport of moist sand. Published by the American Physical Society 2024 |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| Relation: |
info:eu-repo/semantics/altIdentifier/pmid/39161022; PUBMED: 39161022 |
| DOI: |
10.1103/PhysRevE.110.014901 |
| Availability: |
https://hal.science/hal-04672799; https://hal.science/hal-04672799v1/document; https://hal.science/hal-04672799v1/file/Cohesion_Houssem.pdf; https://doi.org/10.1103/PhysRevE.110.014901 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.A2A58DB4 |
| Database: |
BASE |