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Regensburg 2010 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 25: Glasses II (joint session of CPP, DF, DY)

DY 25.6: Vortrag

Donnerstag, 25. März 2010, 11:00–11:15, H38

Brownian dynamics simulation of extensional shear flow in dense colloidal hard-sphere systems — •Olaf Herbst1 and Thomas Voigtmann1,21Institut für Materialphysik im Weltraum, Deutsches Zentrum für Luft- und Raumfahrt (DLR), 51170 Köln, Germany — 2Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany

Using a novel algorithm based on on event-driven MD simulations adapted for Brownian dynamics, we examine an extensional flow of colloidal particles with periodic boundary conditions. We study the slow dynamics of dense hard-sphere systems when shear rates are high enough to interfere with the slow (alpha) relaxation time. Characteristic features such as the mean-square displacement as a function of time will be discussed for a variety of system parameters.

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