Regensburg 2022 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 46: Poster Session: Complex Fluids, Soft Matter, Active Matter, Glasses and Granular Materials
DY 46.16: Poster
Donnerstag, 8. September 2022, 15:00–18:00, P2
The Scallop Theorem and Swimming at the Mesoscale — •Maxime Hubert1, Oleg Trosman1, Ylona Collard2, Alexander Sukhov3, Jens Harting3, Nicolas Vandewalle2, and Ana-Sunčana Smith1,4 — 1PULS group, FAU Erlangen-Nürnberg, Erlangen, Germany — 2GRASP, University of Liège, Liège, Belgium — 3Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11), Forschungszentrum Jülich, Nürnberg, Germany — 4Group for Computational Life Sciences, Ruđer Bošković Institute, Zagreb, Croatia
By comparing theoretical modeling, simulations and experiments, we show that there exists a swimming regime at low-Reynolds number solely driven by the inertia of the swimmer itself. This is demonstrated by considering a dumbbell with an asymmetry in coasting time in its two spheres. Despite deforming in a reciprocal fashion, the dumbbell swims by generating a non-reciprocal Stokesian flow, which arises from the asymmetry in coasting times. This asymmetry acts as a second degree of freedom, which allows for recasting the scallop theorem at the mesoscopic scale at the lowest level of theory.