Thu, 27 Oct 2016
16:00 -
17:00
L3
Multi-phase flows with contact lines: solid vs liquid substrates
Dirk Peschka
(Weierstrass Institute for Applied Analysis and Stochastics)
Abstract
The study of moving contact lines is challenging for various reasons: Physically no sliding motion is allowed with a standard no-slip boundary condition over a solid substrate. Mathematically one has to deal with a free-boundary problem which contains certain singularities at the contact line. Instabilities can lead to topological transition in configurations space - their rigorous mathematical understanding is highly non-trivial. In this talk some state-of-the-art modeling and numerical techniques for such challenges will be presented. These will be applied to flows over solid and liquid substrates, where we perform detailed comparisons with experiments.