Rayleigh-Bénard convection in non-Newtonian fluids: Experimental and theoretical investigations - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Physics of Fluids Année : 2021

Rayleigh-Bénard convection in non-Newtonian fluids: Experimental and theoretical investigations

Résumé

We present an experimental and theoretical study of Rayleigh-Bénard convection in shearthinning fluids with temperature dependent properties. Experiments were performed using a cylindrical cell of radiusR = 60 mm and height adjustable atd = 15 mm and 20 mm giving a radius-toheight ratio L = 4 and 3 respectively. The fluids used are glycerol (Newtonian fluid) and aqueous xanthan gum solutions (shear-thinning fluids) at 1000 ppm and 1200 ppm. Convection patterns are visualized by the shadowgraph method. In the theoretical part of this study, the weakly nonlinear analysis performed by Thomas Varé et al. [J. Fluid Mech. 905, A33(2020)] is extended to take
Fichier principal
Vignette du fichier
Hexagons_Wavenumber_POF_R1_02112021.pdf (5.29 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03454578 , version 1 (29-11-2021)

Identifiants

Citer

Mondher Bouteraa, Thomas Varé, Chérif Nouar, Simon Becker, Jamal Ouhajjou. Rayleigh-Bénard convection in non-Newtonian fluids: Experimental and theoretical investigations. Physics of Fluids, 2021, 33, pp.114112. ⟨10.1063/5.0070983⟩. ⟨hal-03454578⟩
54 Consultations
109 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More