Full Content is available to subscribers

Subscribe/Learn More  >

Numerical Analysis of Spreading of Liquid Droplet on a Heterogeneous Surface by the Lattice Boltzmann Method

[+] Author Affiliations
Qingming Chang, J. Iwan D. Alexander

Case Western Reserve University, Cleveland, OH

Paper No. ICMM2005-75139, pp. 651-658; 8 pages
  • ASME 3rd International Conference on Microchannels and Minichannels
  • ASME 3rd International Conference on Microchannels and Minichannels, Parts A and B
  • Toronto, Ontario, Canada, June 13–15, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4185-5 | eISBN: 0-7918-3758-0
  • Copyright © 2005 by ASME


In this paper, the behavior of a micron-scale fluid droplet on a heterogeneous surface is investigated using a two-phase lattice Boltzmann method. The solid surface is uniform hydrophilic substrate separated by a hydrophobic strip on the central line. The dependence of spreading behavior on wettability, the width of hydrophobic strip and gravity is investigated. A decrease in contact angle of the liquid on a hydrophilic surface leads to break up of the droplet for certain substrate patterns. The two-phase Lattice Boltzmann Method (LBM) permits the simulation of the time dependent threedimensional motion of a liquid droplet on solid surface patterned with hydrophobic and hydrophilic strips. A nearest-neighbor molecular interaction force is used to model the adhesive forces between the fluid and solid surface. The model is validated by demonstrating consistency of the measured dynamic contact line with experimentally measured surface properties and observed surface shapes. The simulations suggest that the present lattice Boltzmann model can be used as a reliable way to study fluidic control on heterogeneous surfaces and other wetting related subjects.

Copyright © 2005 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In