Phase-field Lattice Boltzmann model for liquid bridges and coalescence in wet granular media
| Autor: | N. Younes, Z. Benseghier, O. Millet, A. Wautier, F. Nicot, R. Wan |
|---|---|
| Přispěvatelé: | Risques, Ecosystèmes, Vulnérabilité, Environnement, Résilience (RECOVER), Aix Marseille Université (AMU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356 (LaSIE), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS), Environnements, Dynamiques et Territoires de Montagne (EDYTEM), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Department of Civil Engineering [Calgary], University of Calgary |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
[PHYS.PHYS.PHYS-COMP-PH]Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph]
General Chemical Engineering GPU capillary forces LBM [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] [SPI.MECA.SOLID]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Solid mechanics [physics.class-ph] capillary bridges contact angle multi-phase |
| Zdroj: | Powder Technology Powder Technology, 2022, 411, pp.117942. ⟨10.1016/j.powtec.2022.117942⟩ |
| ISSN: | 0032-5910 |
| DOI: | 10.1016/j.powtec.2022.117942⟩ |
| Popis: | International audience; In this paper a phase-field based Lattice Boltzmann model is formulated to simulate the formation and coalescence of capillary bridges between spherical solid particles as well as the associated capillary forces. To capture the air-water interface, Allen-Cahn equation is coupled with two-phase Navier-Stokes equation through a surface tension term. The capillary force arising from the water interaction with a curved solid surface is formulated along with a numerical integration scheme. Two benchmark examples are considered to validate the proposed model, namely: the spreading of a drop on a spherical particle and capillary rise in a narrow tube. Then, the capillary forces due to isolated and coalesced liquid in two and three spherical particle configurations are computed to illustrate the pendular regime and its transition to the funicular regime. Numerical simulation results are found to be in good agreement with available experimental and numerical data for wetting in a doublet and a triplet of particles, respectively. The numerical results indicate that the proposed model provides a viable framework within which the complex capillary interface evolution during the wetting of a large assembly of particles could be captured. |
| Databáze: | OpenAIRE |
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