Hydrodynamic interaction with super-hydrophobic surfaces

Details Hydrodynamic interaction with super-hydrophobic surfaces Hydrodynamic interaction with super-hydrophobic surfaces

2010-04-06

arxiv.org/abs/1004.0794v3

Soft Matter, v.6, pp.4563-4570 (2010)

Physics

Fluid Dynamics

20 pages, 7 figures

Scientific paper

10.1039/c0sm00205d

Patterned surfaces with large effective slip lengths, such as super-hydrophobic surfaces containing trapped gas bubbles, have the potential to reduce hydrodynamic drag. Based on lubrication theory, we analyze an approach of a hydrophilic disk to such a surface. The drag force is predicted analytically and formulated in terms of a correction function to the Reynolds equation, which is shown to be the harmonic mean of corrections expressed through effective slip lengths in the two principal (fastest and slowest) orthogonal directions. The reduction of drag is especially pronounced for a thin (compared to texture period) gap. It is not really sensitive to the pattern geometry, but depends strongly on the fraction of the gas phase and local slip length at the gas area.

Affiliated with

Also associated with

No associations

Rating

Hydrodynamic interaction with super-hydrophobic surfaces does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Hydrodynamic interaction with super-hydrophobic surfaces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrodynamic interaction with super-hydrophobic surfaces will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-56966