Wetting effects play a major role in microfluidics. Application examples from daily life range from diapers over ink jet printers to the never-dripping outlet of a tea pot. This video shows exemplarily that the wetting models in the free-surface lattice Boltzmann method by the LSS at University of Erlangen, Germany (https://www10.cs.fau.de) are capable to simulate liquid water drops on differently coated surfaces. While the liquid tries to avoid the hydrophobic (red) areas, it strives to wet the hydrophilic (green) stripes.

Further information can be found at https://www10.cs.fau.de

By Stefan Donath