Entrainment of particles during the withdrawal of a fibre from a dilute suspension
| Autor: | Brian M. Dincau, J. A. Lee, Quentin Magdelaine, Alban Sauret, E. Mai, Martin Z. Bazant |
|---|---|
| Přispěvatelé: | University of California [Santa Barbara] (UCSB), University of California, Surface du Verre et Interfaces (SVI), SAINT-GOBAIN-Centre National de la Recherche Scientifique (CNRS), Institut Jean Le Rond d'Alembert (DALEMBERT), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Saint-Gobain Research North America, Massachusetts Institute of Technology (MIT) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Materials science Capillary action Fluids & Plasmas 02 engineering and technology engineering.material 01 natural sciences Mathematical Sciences 010305 fluids & plasmas Physics::Fluid Dynamics Engineering Coating 0103 physical sciences particle/fluid flow Composite material ComputingMilieux_MISCELLANEOUS Mechanical Engineering coating Radius 021001 nanoscience & nanotechnology Condensed Matter Physics Stagnation point Capillary number Condensed Matter::Soft Condensed Matter physics.flu-dyn thin films Mechanics of Materials engineering Particle sense organs Particle size 0210 nano-technology Entrainment (chronobiology) |
| Zdroj: | Journal of Fluid Mechanics Journal of Fluid Mechanics, Cambridge University Press (CUP), 2020, 903, ⟨10.1017/jfm.2020.643⟩ arXiv |
| ISSN: | 0022-1120 1469-7645 |
| DOI: | 10.1017/jfm.2020.643⟩ |
| Popis: | © The Author(s), 2020. A fibre withdrawn from a bath of a dilute particulate suspension exhibits different coating regimes depending on the physical properties of the fluid, the withdrawal speed, the particle sizes and the radius of the fibre. Our experiments indicate that only the liquid without particles is entrained for thin coating films. Beyond a threshold capillary number, the fibre is coated by a liquid film with entrained particles. We systematically characterize the role of the capillary number, the particle size and the fibre radius on the threshold speed for particle entrainment. We discuss the boundary between these two regimes and show that the thickness of the liquid film at the stagnation point controls the entrainment process. The radius of the fibre provides a new degree of control in capillary filtering, allowing greater control over the size of the particles entrained in the film. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|