Regensburg 2016 – wissenschaftliches Programm

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DY: Fachverband Dynamik und Statistische Physik

DY 29: Poster - Active Matter, Microswimmers and -fluidics, Statistical Physics Biosystems

DY 29.5: Poster

Dienstag, 8. März 2016, 18:15–21:00, Poster C

Turbulence driven clustering in nematic active particles — Devin Waas, •Rebekka E. Breier, and Marco G. Mazza — MPI for Dynamics and Self-Organization, Göttingen

Many active swimmers are, especially in biological applications, exposed to a surrounding turbulent field. We assume the active particles to be self-propelled and to interact nematically with each other as well as with the turbulent field. We present a numerical study in terms of time-driven molecular dynamics simulations. The turbulent field is calculated via the so-called ”Kraichnan model“ which mimics the correct scaling behavior as given by the Kolmogorov law. We find that the turbulent field causes the active particles to cluster and investigate the clustering in detail. Moreover, the global alignment is destroyed by the turbulence.