DFG Priority Program SPP 1164
Nano- & Microfluidics:
Bridging the Gap between
Molecular Motion and Continuum Flow
Lattice-Boltzmann simulation of the flow behaviour along rough and hydrophobic surfaces
| Project Leader: | Dr. Jens Harting Universität Stuttgart Institut für Computerphysik (ICP) Stuttgart |
Summary
Apparent slip in microchannels has been studied
by various authors, but until today there is no consistent understanding of all
the different experimental results. We are planning to perform very detailed
large scale lattice Boltzmann simulations in order to study the influence of
the wettability and roughness of the channel surface on the detected slip. We
will simulate typical surface force apparatus experiments by introducing an
oscillating sphere in the vicinity of the surface and study the influence of
the wall properties on the detected boundary slip. We will also study the
influence of the surface properties on structuring effects and flow properties
of multi-particle systems with Brownian motion. Finally, our project will be
extended to the investigation of flow of dense suspensions in hydrophobic and
rough microchannels.