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arXiv · 2504.11616

Hidden symmetry in passive scalar advected by 2D Navier-Stokes turbulence

Chiara Calascibetta·Luca Biferale·Fabio Bonaccorso·Massimo Cencini·Alexei A. Mailybaev
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Abstract

Here we show that passive scalars possess a hidden scaling symmetry when considering suitably rescaled fields. Such a symmetry implies (i) universal probability distribution for scalar multipliers and (ii) Perron-Frobenius scenario for the anomalous scaling of structure functions. We verify these predictions with high resolution simulations of a passive scalar advected by a 2D turbulent flow in inverse cascade.

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Chiara Calascibetta, Luca Biferale, Fabio Bonaccorso, Massimo Cencini, Alexei A. Mailybaev. 2025-04-15. Hidden symmetry in passive scalar advected by 2D Navier-Stokes turbulence. https://arxiv.org/abs/2504.11616

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