Speaker
Description
Microswimmers typically undergo rapid motion to propel themselves through fluid. When considering the long-time swimmer dynamics of interest, the effect of the rapid motion is often assumed to average out without significantly affecting the trajectories. However, recent work has shown that this is not always the case. In this talk, we consider how the interaction between rapid propulsive motion and environmental factors influences swimmer trajectories. Touching upon examples of boundaries and external flows, we exploit the separation of timescales through a systematic multiscale analysis to derive effective equations for the long-time dynamics. As a result of our analysis, qualitatively different predictions emerge, highlighting the role of fast-time motion on the long-time swimmer dynamics as they navigate their environment.
