Regensburg 2022 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 7: Poster 1

BP 7.21: Poster

Montag, 5. September 2022, 18:00–20:00, P1

Numerical study of the driving forces behind the slipper formation for RBC cells in rectangular microchannels. — •Berin Becic — Biofluid Simulation and Modeling ,Theoretische Physik VI, Universität Bayreuth

Red blood cells in rectangular microchannel flows exhibit two types of motions. At low velocities they tend to migrate towards the center and take symmetric croissant like shapes whereas for high velocities they migrate along the axis with the larger dimension and take an asymmetric slipper shape. Based on these results the behavior of the asymmetric off-centered slipper-movement was studied further via the boundary integral method. There it was observed that surprisingly this motion is only weakly dependant on the cell's elastic properties. Additionally it was found that the flow profile perpendicular to the direction of the displacement of the centered position plays a crucial role in stabilizing the slipper state and surpressing the tumbling motion expected from considering the behavior in a pure shear flow.