Cascades of energy and helicity in axisymmetric turbulence - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review Fluids Année : 2018

Cascades of energy and helicity in axisymmetric turbulence

Résumé

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.
Fichier principal
Vignette du fichier
PhysRevFluids.3.014607-1.pdf (1.26 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

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

Identifiants

Citer

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⟩
293 Consultations
220 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More