Dresden 2017 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 12: Focus: Soft Particles in Flows II (joint focus session CPP/DY)

CPP 12.5: Vortrag

Montag, 20. März 2017, 16:15–16:30, ZEU 160

An iterative solution algorithm for actively and passively swimming elastic capsules — •Horst-Holger Boltz1,2 and Jan Kierfeld21Institut für nichtlineare Dynamik, Fakultät Physik, Georg-August-Universität Göttingen, Göttingen, Deutschland — 2Fakultät Physik, Technische Universität Dortmund, Dortmund, Deutschland

Soft elastic capsules which are subject a viscous fluid flow undergo shape deformation coupled to their motion. We introduce an iterative solution scheme which couples hydrodynamic boundary integral methods and elastic shape equations to find the stationary axisymmetric shape and the velocity of an elastic capsule moving in a viscous fluid at low Reynolds numbers. We use this approach to systematically study dynamical shape transitions of capsules with Hookean stretching and bending energies and spherical rest shape sedimenting under the influence of gravity or centrifugal forces [Phys. Rev. E 92: 033003 (2015)]. Additionally, we discuss the application to actively swimming (“squirming”) capsules.

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