Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 45: Colloids and Complex Liquids II

CPP 45.6: Vortrag

Donnerstag, 14. März 2013, 16:30–16:45, H40

Shear-induced diffusion of spheroidal particles in non-Brownian suspensions at low Reynolds numbers — •Florian Janoschek, Federico Toschi, and Jens Harting — Eindhoven University of Technology, Eindhoven, The Netherlands

Hydrodynamic diffusion can strongly enhance mass and heat transport in microfluidic systems. However, while several authors discussed the shear-induced self-diffusion of spherical particles in experiment, theory, and simulation at low or vanishing Reynolds numbers, less is known about the case of non-spherical particles that are present in suspensions as different as blood, mud, or paint. We present our numerical study of concentrated suspensions of rigid particles at different oblate and prolate aspect ratios. The hydrodynamic self-diffusion is compared with the one obtained for spherical particles and the effect of asphericity at varying volume fractions is discussed.