Jump to main content
Jump to site search

Issue 37, 2013
Previous Article Next Article

Momentum and mass transport over a bubble mattress: the influence of interface geometry

Author affiliations

Abstract

In this study we investigate numerically how a partially slippery bubble mattress can be employed to enhance momentum and mass transport. The bubble mattress, which is a superhydrophobic surface, consists of an array of slippery gas bubbles with no-slip walls in between. We consider a pressure-driven laminar flow over the bubble mattress, with a solute being supplied from the gas bubbles. The results show that, because of effective wall slip, solute transport can be enhanced significantly with respect to a fully saturated no-slip wall. The enhancement depends on the interface geometry of the bubble mattress, i.e. on the bubble size, protrusion angle, and surface porosity. In addition, we demonstrate that the mass transfer enhancement disappears below a critical bubble size. The effective slip vanishes for very small bubbles, wherefore interfacial transport becomes diffusion dominated. For large bubbles, solute transport near the interface is convection enhanced.

Graphical abstract: Momentum and mass transport over a bubble mattress: the influence of interface geometry

Back to tab navigation

Publication details

The article was received on 20 May 2013, accepted on 24 Jul 2013 and first published on 25 Jul 2013


Article type: Paper
DOI: 10.1039/C3SM51408K
Citation: Soft Matter, 2013,9, 8949-8957
  •   Request permissions

    Momentum and mass transport over a bubble mattress: the influence of interface geometry

    A. S. Haase, E. Karatay, P. A. Tsai and R. G. H. Lammertink, Soft Matter, 2013, 9, 8949
    DOI: 10.1039/C3SM51408K

Search articles by author

Spotlight

Advertisements