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Active suspensions in domains with static or moving boundaries

Presented by: 
E Lushi Imperial College London
Monday 19th August 2013 - 11:30 to 12:00
I will briefly describe a novel fast computational method that enables us to trace the coupled dynamics of thousands on micro-swimmers that interact directly as well as via the collectively generated fluid flows. I will illustrate with results involving such an ``active'' micro-swimmer suspension inside a drop where the spontaneous organization that emerges depends not only on confinement and steric effects, but also on the presence of hydrodynamics. Lastly, I will discuss the case when the active suspension is inside a domain with moving boundaries, such as a peristaltic pump, and where the transport of passive tracers gets effected by the swimmers' collective motion.
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons