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Journal Articles Physical Review Fluids Year : 2018

Cascades of energy and helicity in axisymmetric turbulence

Abstract

A spectral analysis of strictly axisymmetric turbulence is performed. Both freely decaying and statistically steady flows are considered. In helical flows we identify a dual cascade, where energy is transferred towards the large scales and helicity to the smallest ones. It is shown that even in the absence of net helicity, a dual cascade persists, transferring energy backward and positively and negatively polarized helicity fluctuations forward.
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Dates and versions

hal-01705327 , version 1 (09-02-2018)

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Bo Qu, Aurore Naso, Wouter J.T. Bos. Cascades of energy and helicity in axisymmetric turbulence. Physical Review Fluids, 2018, 3 (1), pp.014607. ⟨10.1103/PhysRevFluids.3.014607⟩. ⟨hal-01705327⟩
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