Experimental evidence of a phase transition in a closed turbulent flow

Abstract

We experimentally study the susceptibility to symmetry breaking of a closed turbulent von Kármán swirling flow from $Re=150$ to $Re\simeq 10^6$. We report a divergence of this susceptibility at an intermediate Reynolds number $Re=R{e}_{\chi }\simeq 90000$ which gives experimental evidence that such a highly space and time fluctuating system can undergo a "phase transition". This transition is furthermore associated with a peak in the amplitude of fluctuations of the instantaneous flow symmetry corresponding to intermittencies between spontaneously symmetry breaking metastable states.

accepted for publication in Physical review Letters

References in corpus (2)

• Generation of magnetic field by dynamo action in a turbulent flow of liquid sodium
• Slow dynamics in a turbulent von Kármán swirling flow

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