Modeling of Drops Spreading on Patterned Surfaces

J. Frassy[1], C. L├ęcot[2], C. Delattre[3], and A. Soucemarianadin[1]
[1] LEGI UMR 5519, Grenoble
[2] LAMA UMR 5127, Le Bourget-du-Lac
[3] LETI, CEA Grenoble

We present simulations of drops spreading on heterogeneous surfaces.

The droplet height is the solution of a time-dependent non-linear fourth order partial differential equation, which is solved using COMSOL Multiphysics.

In the fully wetting case, we compare our results with experimental data and with previous results reported in the literature.

The simulation results reveal how surfaces may be patterned in order that droplets spread preferentially in a given direction.