Droplet Spreading on Heterogeneous Surfaces using a Three-Dimensional Lattice Boltzmann Model

Details Droplet Spreading on Heterogeneous Surfaces using a Three-Dimensional Lattice Boltzmann Model Droplet Spreading on Heterogeneous Surfaces using a Three-Dimensional Lattice Boltzmann Model

2003-03-05

arxiv.org/abs/cond-mat/0303082v1

Physics

Condensed Matter

Soft Condensed Matter

10 pages, Lattice Boltzmann workshop in ICCS03 conference, to be published in LNCS

Scientific paper

We use a three-dimensional lattice Boltzmann model to investigate the spreading of mesoscale droplets on homogeneous and heterogeneous surfaces. On a homogeneous substrate the base radius of the droplet grows with time as $t^{0.28}$ for a range of viscosities and surface tensions. The time evolutions collapse onto a single curve as a function of a dimensionless time. On a surface comprising of alternate hydrophobic and hydrophilic stripes the wetting velocity is anisotropic and the equilibrium shape of the droplet reflects the wetting properties of the underlying substrate.

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