Dresden 2009 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 36: Microfluidics III: Soft Objects in Flow
CPP 36.2: Vortrag
Donnerstag, 26. März 2009, 16:15–16:30, ZEU 160
Dynamics of suspended particles diffusing through small walls — •Laura Almenar1,2 and Markus Rauscher1,2 — 1Max-Planck-Institut für Metallforschung, Stuttgart, Germany — 2ITAP, Universität Stuttgart, Stuttgart, Germany
We study the dynamics of suspended particles in small channels in the presence of flow (in particular Poisseuille flow). We describe the transport taking into account the interactions among the particles as well as with the walls. We extend our study to include the effect of hydrodynamic interactions between particlesand walls. With hydrodynamic chromatography as an application in mind we aim for a better understanding of these transport processes.
We focus first on steady state situtations and we calculate the size-dependent throughput of the particles using a finite element method. It will be compared with the case of non-interacting particles. The throughput is enhanced or decreased as compared to the non-interacting case depending on the size ratio of the particles and the interaction radius.