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arXiv · 2207.12227

Intermittency, fluctuations and maximal chaos in an emergent universal state of active turbulence

Siddhartha Mukherjee·Rahul K. Singh·Martin James·Samriddhi Sankar Ray
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Abstract

A hydrodynamic model of active, low Reynolds number suspensions, shows the emergence of an asymptotic state with a universal spectral scaling and non-Gaussian (intermittent) fluctuations in the velocity field. Such states arise when these systems are pushed beyond a critical level of activity and show features akin to high Reynolds number, inertial turbulence. We provide compelling numerical and analytical evidence for the existence of such a transition at a critical value of activity and further show that the maximally chaotic states are tied to this transition.

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Siddhartha Mukherjee, Rahul K. Singh, Martin James, Samriddhi Sankar Ray. 2022-07-25. Intermittency, fluctuations and maximal chaos in an emergent universal state of active turbulence. https://doi.org/10.1038/s41567-023-01990-z

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