par Martinez-Mardones, Javier;Tiemann, R.;Walgraef, Daniel
Référence Revista mexicana de física, 48, SUPPL.3, page (103-105)
Publication Publié, 2002-12
Article révisé par les pairs
Résumé : Following the insight of P. Kolodner (J. Non-Newtonian Fluid Mech. 75 (1998) 167)on DNA solutions, a study of the Rayleigh-Bénard instability for a binary viscoelastic fluid is presented. We emphasize the role of the relaxation time typical of the Oldroyd-B model for a viscoelastic fluid and the Soret effect characteristic of binary fluids. Critical values of parameters for oscillatory convection are established. The results suggest that the aspect of binary fluids cannot be ignored when studying the convection of polymeric solutions.