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Dense suspensions of swimming bacteria exhibit chaotic flow patterns, termed “bacterial turbulence,” that promote mixing and transport of resources and signaling chemicals within cell colonies. While the importance of this natural phenomenon is widely recognized, the structure of the resulting flow is not well understood. Here, we extend the use of proper orthogonal decomposition (POD) to study ... read morethe dynamical flow structure of this model active matter system. We show that the complex velocity and fluid structure interactions of bacterial turbulence can be captured with a relatively small subset of POD modes. These results contribute to the fundamental understanding of chaotic flow structures responsible for mixing and offer a path towards data-driven modeling of active matter systems.
Advisor: Prof. Jeffrey S. Guastoread less
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