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Journal Articles Physical Review Fluids Year : 2020

Transition from non-swirling to swirling axisymmetric turbulence

Abstract

Strictly axisymmetric turbulence, i.e., turbulence governed by the Navier-Stokes equations modified such that the flow is invariant in the azimuthal direction, is a system intermediate between two-and three-dimensional turbulence. We investigate statistically steady states of this system by direct numerical simulation using a forcing protocol, which allows the injected energy in the toroidal and in the poloidal directions to be tuned independently. A sharp transition between a two-dimensional two-component (2D2C, non-swirling) flow and a two-dimensional three-component (2D3C, swirling) flow is observed. We derive a statistical model which reproduces this transition.
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Dates and versions

hal-02765845 , version 1 (04-06-2020)

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Zecong Qin, Hugues Faller, Bérengère Dubrulle, Aurore Naso, Wouter J.T. Bos. Transition from non-swirling to swirling axisymmetric turbulence. Physical Review Fluids, 2020, 5 (6), ⟨10.1103/PhysRevFluids.5.064602⟩. ⟨hal-02765845⟩
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