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Chaos and mixing in self-propelled droplets
Phys. Rev. Fluids 4, 113102 – Published 21 November, 2019
DOI: https://doi.org/10.1103/PhysRevFluids.4.113102
Abstract
We consider self-propelled droplets that are driven by internal flow. Tracer particles, which are advected by the flow, in general follow chaotic trajectories, even though the motion of the autonomous swimmer is completely regular. The flow is mixing, and for Péclet and Batchelor numbers, which are realized, e.g., in eukaryotic cells, advective mixing can substantially accelerate and even dominate transport by diffusion.
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