A note on the effective slip properties for microchannel flows with ultrahydrophobic surfaces

Mauro Sbragaglia, Andrea Prosperetti

Research output: Contribution to journalArticleAcademicpeer-review

168 Citations (Scopus)

Abstract

A type of superhydrophobic surface consists of a solid plane boundary with an array of grooves which, due to the effect of surface tension, prevent a complete wetting of the wall. The effect is greatest when the grooves are aligned with the flow. The pressure difference between the liquid and the gas in the grooves causes a curvature of the liquid surface resisted by surface tension. The effects of this surface deformation are studied in this paper. The corrections to the effective slip length produced by the curvature are analyzed theoretically and a comparison with available data and related mathematical models is presented.
Original languageEnglish
Pages (from-to)043603-1-043603-8
Number of pages8
JournalPhysics of fluids
Volume19
Issue number4
DOIs
Publication statusPublished - 2007

Fingerprint

Dive into the research topics of 'A note on the effective slip properties for microchannel flows with ultrahydrophobic surfaces'. Together they form a unique fingerprint.

Cite this