Regensburg 2013 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 31: Anomalous Diffusion

DY 31.7: Vortrag

Donnerstag, 14. März 2013, 16:30–16:45, H48

Oriented Particles in Porous Media — •Prehl Janett¹, Haber René^1,2, Hoffmann Karl Heinz¹, and Herrmann Heiko² — ¹TU Chemnitz, Institut für Physik, Chemnitz, Deutschland — ²Center for Nonlinear Studies, Institute of Cybernetics at Tallinn University of Technology, Tallinn, Estonia

Diffusion in porous media is a long studied topic. The usual modeling applies point particles without any structure. In this presentation we introduce particles, exhibiting a spatial extension and an orientation, that diffuse in porous media represented by a Sierpinski carpet model. Due to the properties of the applied particles, they interact with their surrounding, i.e. they might get stuck in parts of the structure. Therefore we modeled a new move class for oriented particles based on the blind ant algorithm. We present the obtained result and we discuss the following upcoming questions: How do the oriented particles move within the porous media? Does the transport of these particles follow the same laws as point particles do? If there are differences, are these only local effects or can they also be observed in the over all behavior? Do we obtain different exponents for the mean squared displacement (MSD) or do we even get a new functional dependence for the MSD?