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Packing of wet monodisperse spheres
- Source :
- Powder Technology, Powder Technology, Elsevier, 2020, 378, pp.60-64. ⟨10.1016/j.powtec.2020.09.074⟩
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- International audience; We experimentally investigated the packing of wet monodisperse spheres with controlled falling height. The packing fraction are found to decrease with smaller grain size and free fall heights. A model describing the effects of interparticle force and falling height on packing fraction is developed by introducing a dimensionless length scale, representing the extent of particle rearrangement towards a denser state due to impacts of falling grains. A universal law is observed for both wet particles where capillary forces dominate and dry powders where van der Waals forces govern the packing behaviour. This study deepens the understanding of packing of cohesive spheres and provide a simple experimental method for generating granular media with tailored packing fraction.
- Subjects :
- Length scale
Materials science
cohesive granular media
granular packing
Capillary action
General Chemical Engineering
[SPI.GCIV.GEOTECH]Engineering Sciences [physics]/Civil Engineering/Géotechnique
02 engineering and technology
021001 nanoscience & nanotechnology
Atomic packing factor
Grain size
symbols.namesake
020401 chemical engineering
[SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph]
symbols
Particle
SPHERES
0204 chemical engineering
van der Waals force
Composite material
0210 nano-technology
monodisperse spheres
capillary force
Dimensionless quantity
Subjects
Details
- ISSN :
- 00325910
- Volume :
- 378
- Database :
- OpenAIRE
- Journal :
- Powder Technology
- Accession number :
- edsair.doi.dedup.....e820c550fa7427672443d5c85f4c503f
- Full Text :
- https://doi.org/10.1016/j.powtec.2020.09.074