Collective Dynamics of Self-Propelled Particles: Poiseuille Flow States and Boundary Effects

• Antragsteller: Dr. Sebastian Heidenreich
• Fachliche Zuordnung: Statistische Physik, Nichtlineare Dynamik, Komplexe Systeme, Weiche und fluide Materie, Biologische Physik
• Förderung: Förderung von 2009 bis 2010
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 154606254

The intended research project focuses on the collective dynamics and flow behavior of self-propelled particles subjected to a Poiseuille flow. The objective is the understanding of the interplay between the orientational dynamics, activity, concentration and the external flow. To this purpose, we want to solve numerically hydrodynamic equations that model self-propelled particles in the continuum limit. Firstly, we want to calculate (in one spatial dimension) a non-equilibrium phase diagram spanned by activity, tumbling parameter (strength of the flow coupling) and the strength of the Poiseuille flow. Moreover, we want to derive appropriate boundary conditions that model the fluid wall interaction and investigate the effect on the collective flow behavior.Furthermore, we want to extend the numerical program to two spatial dimensions, in order to simulate, e.g. capillary flows. Here, we want to focus on promising flow modes that are found in the one-dimensional case and discuss possible applications.

• DFG-Verfahren: Forschungsstipendien
• Internationaler Bezug: Großbritannien
• Gastgeberin: Professorin Dr. Julia Yeomans