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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Poster: Focus: Wetting on smooth and rough surfaces: From spreading to superhydrophobicity

CPP 30.8: Poster

Mittwoch, 13. März 2013, 16:30–18:30, Poster C

Simulating immiscible multi-phase flow and wetting by means of stochastic rotation dynamics (SRD) - A 3D modeling approach — •Thomas Hiller, Marta Sanchez de la Lama, Martin Brinkmann, and Stephan Herminghaus — Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany

We use the mesoscopic particle simulation method SRD to simulate immiscible multi-phase flow on the pore and sub-pore scale in three dimensions. As an extension to the standard SRD method, we present a novel approach on implementing complex wettability on heterogeneous surfaces. Our preliminary results demonstrate the capability of this method to address a variety of applications. For instance, on the pore-scale SRD is a valuable tool to study the formation of capillary bridges in an assembly of three or four spherical beads. Additionally, we show the simulation of flow through an artificial porous media (packing of spherical beads) where the substrate exhibits different spatial wetting characterisitcs and how this influences the dynamics, in terms of percolation and residual saturation, through the porous media. As an outlook we also present how SRD can be applied to simulate droplets flowing in microfluidic channels.