Transient Rayleigh-Bénard-Marangoni solutal convection - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physics of Fluids Année : 2012

Transient Rayleigh-Bénard-Marangoni solutal convection

Résumé

Solutal driven flow is studied for a binary solution submitted to solvent evaporation at the upper free surface. Evaporation induces an increase in the solute concentration close to the free surface and solutal gradients may induce a convective flow driven by buoyancy and/or surface tension. This problem is studied numerically, using several assumptions deduced from previous experiments on polymer solutions. The stability of the system is investigated as a function of the solutal Rayleigh and Marangoni numbers, the evaporative flux and the Schmidt number. The sensitivity of the thresholds to initial perturbations is analyzed. The effect of viscosity variation during drying is also investigated. At last numerical simulations are presented to study the competition between buoyancy and Marangoni effects in the nonlinear regime.
Fichier principal
Vignette du fichier
trouette_pof2012_postprint.pdf (3.27 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00711759 , version 1 (25-06-2012)

Identifiants

Citer

Benoît Trouette, Eric Chénier, Frédéric Doumenc, C. Delcarte, B. Guerrier. Transient Rayleigh-Bénard-Marangoni solutal convection. Physics of Fluids, 2012, 24 (7), pp.074108. ⟨10.1063/1.4733439⟩. ⟨hal-00711759⟩
262 Consultations
1329 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More