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- Title
Geometrically driven liquid wicking: numerical study and experimental validation.
- Authors
El Ganaoui, Mohammed; El Jouad, Mohamed; Bennacer, Rachid; Nunzi, Jean-Michel; Abbaspour, Nima; Beltrame, Philippe; Néel, Marie-Christine; Schulz, Volker
- Abstract
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.
- Subjects
CAPILLARY flow; MANUFACTURING processes; SURFACE structure; COMPUTER simulation
- Publication
European Physical Journal - Applied Physics, 2020, Vol 91, Issue 3, p1
- ISSN
1286-0042
- Publication type
Article
- DOI
10.1051/epjap/2020200193