Hydrodynamic drag-force measurement and slip length on microstructured surfaces - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2012

Hydrodynamic drag-force measurement and slip length on microstructured surfaces

Résumé

In this paper, a drainage experiment of water between a borosilicate sphere and a microstructured surface constituted by regularly spaced pillars is presented. The microstructured surface has two parts: on one part the liquid forms a Cassie interface and on the second it forms a Wenzel interface. The measured hydrodynamic drag force is larger on the Cassie part compared to the Wenzel part. Furthermore, for the Cassie part, from the hydrodynamic drag force measurements on a pillar and between pillars the corresponding local slip lengths have been extracted. The area average slip length on the surface is in agreement with the value expected by Philip's equation.
Fichier principal
Vignette du fichier
MaaliPRe2012.pdf (1.49 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-00716058 , version 1 (30-08-2018)

Identifiants

Citer

Abdelhamid Maali, Y. Pan, Bharat Bhushan, E. Charlaix. Hydrodynamic drag-force measurement and slip length on microstructured surfaces. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2012, 85 (6), pp.066310 (1-5). ⟨10.1103/PhysRevE.85.066310⟩. ⟨hal-00716058⟩
91 Consultations
201 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More