Dresden 2017 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 14: Microswimmers I (joint session DY/BP)

DY 14.11: Talk

Tuesday, March 21, 2017, 12:45–13:00, HÜL 186

A kinetic theory for dynamics of self-propelled magnetic suspensions — •Fabian Rouven Kössel and Sara Jabbari-Farouji — Johannes Gutenberg-Universität - Institut für Physik

Inspired by novel dynamical behaviour of magnetotactic bacteria, we present a minimal kinetic model for dilute suspensions of magnetic self-propelled particles. Our kinetic theory couples a Fokker-Planck equation of active particles in an external magnetic field to a Stokes-flow equation. Including the hydrodynamic stress contributions due to self-propulsion and magnetic torque in the Stokes flow we investigate the interplay between internal and external drives on the dynamics and effective viscosity of active suspensions. Through the linear stability analysis and full numerical simulations of our model, we examine the role of the external magnetic field on stability of aligned suspensions and their complex flow patterns.