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Accueil du site > Évènements > Séminaires > Séminaires IRPHE > Archives IRPHE > 2016

Vendredi 14 Octobre 2016 / IRPHE

publié le , mis à jour le

Séminaire régulier IRPHE

Temperature fluctuations induced by turbulent dissipation

Orateur : Wouter Bos
LMFA, Ecole Centrale Lyon, Lyon, France

Abstract : In practically every fluid flow, kinetic energy is converted into heat through viscous friction. In a turbulent flow this heat is generated in an inhomogeneous way and the temperature distribution in the fluid will thus not be uniform. In the present talk, we will investigate these temperature fluctuations in isotropic turbulence. It is shown by numerical simulations and theory how these fluctuations interact with the turbulent flow that generated them. The intermittent nature of the dissipation rate fluctuations is shown to play a fundamental role in the physics of viscous heating.

Date et lieu : le Vendredi 14 octobre 2016 à 11h00, salle de séminaire IRPHE