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Onset of Intermittency and Multiscaling in Active Turbulence

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arxiv 2408.06950 v3 pith:BSCATJ5E submitted 2024-08-13 cond-mat.soft nlin.CDphysics.flu-dyn

classification cond-mat.softnlin.CDphysics.flu-dyn
keywords activeflowshighintermittencymultiscalingnumberonsetresults
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Recent results suggest that highly active, chaotic, non-equilibrium states of living fluids might share much in common with high Reynolds number, inertial turbulence. We now show, by using a hydrodynamical model, the onset of intermittency and the consequent multiscaling of Eulerian and Lagrangian structure functions as a function of the bacterial activity. Our results bridge the worlds of low and high Reynolds number flows as well as open up intriguing possibilities of what makes flows intermittent.

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