Geometrically driven liquid wicking: numerical study and experimental validation
| Autor: | Marie-Christine Néel, Volker P. Schulz, Philippe Beltrame, Nima Abbaspour |
|---|---|
| Přispěvatelé: | Environnement Méditerranéen et Modélisation des Agro-Hydrosystèmes (EMMAH), Avignon Université (AU)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), University of Mannheim, Aix Marseille Université (AMU), Hochschule Mannheim - University of Applied Sciences |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
[PHYS]Physics [physics]
Materials science Flat surface Computer simulation Drop (liquid) Solid surface Non symmetric 02 engineering and technology Mechanics Experimental validation 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials [SPI]Engineering Sciences [physics] Liquid film External energy [NLIN.NLIN-PS]Nonlinear Sciences [physics]/Pattern Formation and Solitons [nlin.PS] 0103 physical sciences 010306 general physics 0210 nano-technology Instrumentation |
| Zdroj: | European Physical Journal: Applied Physics European Physical Journal: Applied Physics, EDP Sciences, 2020, 91 (3), pp.31101. ⟨10.1051/epjap/2020200193⟩ |
| ISSN: | 1286-0042 1286-0050 |
| DOI: | 10.1051/epjap/2020200193⟩ |
| Popis: | International audience; Liquid film or drop wicking on solid surface without any external energy input is highly desirable in specific industrial processes. This paper proposes a numerical study of the dynamics of liquid wicking on geometrically structured flat surface. We consider structures deduced from flat surface by super-imposing a series of identical parallel channels, the ensemble being made of the same material. Channels exhibit arrow-shaped patterns. We analyse drop wicking on such a structure using numerical simulation and experiment. Both approaches reveal non symmetric wicking clearly exhibiting a privileged direction. The simulation captures the evolution of the liquid/air interface at smaller time scales and reveals wicking with rapid pulses suggested by the experiment. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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