KULMATOVA, D.; BONN, D.; KELLAY, Hamid

doi:10.1209/0295-5075/101/24002

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

http://creativecommons.org/licenses/by-nc-sa/

KULMATOVA, D.
Laboratoire de Physique Statistique de l'ENS [LPS]

BONN, D.
Van der Waals-Zeeman Institute

KELLAY, Hamid
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

Langue

Article de revue

Ce document a été publié dans

EPL - Europhysics Letters. 2013-01, vol. 101, n° 2, p. 24002

European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing

Résumé en anglais

We here examine the structure of turbulence in the case of a complex fluid made up of water and surfactants. This fluid has the particular property of shear thickening when driven at shear rates above a certain threshold. Through a study of the spectral properties and the structure function scalings, important differences arise with respect to the reference case, i.e., water. The surfactant solution shows strong intermittency at small scales. The large scales are, on the other hand, free of intermittency. While this transition is observed in the structure function scalings, no sign of this transition is seen in the power spectrum of velocity fluctuations which shows a single scaling range. The strongly intermittent small-scale region, despite the scaling of the power spectrum, exhibits properties reminiscent of the near-dissipative range.< Réduire

Mots clés en anglais

High-Reynolds-number turbulence

Polymers and polymer solutions

Métadonnées

Licence d’utilisation du document

High-Reynolds-number turbulence in complex fluids

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche