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Berlin 2008 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 22: POSTERS Micro- and Nanofluidics

CPP 22.11: Poster

Wednesday, February 27, 2008, 16:00–18:30, Poster A

Lattice Boltzman and DPD Electrohydrodyamics simulationsJens Smiatek1, Friederike Schmid1, •Marcello Sega2, and Christian Holm21Fakultät für Physik, Universität Bielefeld, Universitätsstraße 25, D-33615 Bielefeld, Germany — 2Frankfurt Institute for Advanced Studies, Ruth-Moufang Str. 1, D-60438 Frankfurt am Main, Germany

In the framework of the solution of coupled Navier-Stokes / Molecular Dynamics simulations of Electrohydrodynamic systems, we present the results of a comparison between Lattice Boltzmann and Dissipative Particle Dynamics.

The two methods, respectively based on the solution of the Boltzmann equation on a lattice, and on a momentum-conserving Galilean-invariant particle based thermostat, have been recently implemented into the ESPResSo simulation package. Convergence of physical observables and relative limits and strengths of the two approaches are evaluated, as well as their computational efficiency.

The benchmark system is that of an electroosmotic flow in a slit pore, where explicit ions are taken into account, with full periodic electrostatic treatment and hydrodynamic interactions.

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